diff --git a/.github/workflows/basic.yml b/.github/workflows/basic.yml
index c18f5386c..a4ea568d0 100644
--- a/.github/workflows/basic.yml
+++ b/.github/workflows/basic.yml
@@ -9,93 +9,93 @@ on:
       - synchronize
 
 jobs:
-    test-libE:
-        if: '! github.event.pull_request.draft'
-        runs-on: ${{ matrix.os }}
-        strategy:
-            fail-fast: false
-            matrix:
-                os: [ubuntu-latest]
-                mpi-version: [mpich]
-                python-version: ["py311", "py312", "py313", "py314"]
-                comms-type: [m, l]
-                include:
-                    - os: macos-latest
-                      python-version: "py311"
-                      mpi-version: mpich
-                      comms-type: m
-                    - os: macos-latest
-                      python-version: "py311"
-                      mpi-version: mpich
-                      comms-type: l
-
+  test-libE:
+    if: "! github.event.pull_request.draft"
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest]
+        mpi-version: [mpich]
+        python-version: ["py311", "py312", "py313", "py314"]
+        comms-type: [m, l]
+        include:
+          - os: macos-latest
+            python-version: "py311"
+            mpi-version: mpich
+            comms-type: m
+          - os: macos-latest
+            python-version: "py311"
+            mpi-version: mpich
+            comms-type: l
+
+    env:
+      HYDRA_LAUNCHER: "fork"
+      TERM: xterm-256color
+      GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+    defaults:
+      run:
+        shell: bash -l {0}
+
+    steps:
+      - uses: actions/checkout@v6
+        with:
+          lfs: true
+
+      - name: Checkout lockfile
+        run: git lfs checkout
+
+      - uses: prefix-dev/setup-pixi@v0.9.6
+        with:
+          pixi-version: v0.68.1
+          frozen: true
+          environments: ${{ matrix.python-version }}
+          activate-environment: ${{ matrix.python-version }}
+
+      - name: Install minq
+        run: |
+          pixi run -e ${{ matrix.python-version }} ./install/install_minq.sh
+
+      - name: Install libEnsemble, test flake8
+        run: |
+          pip install -e .
+          flake8 libensemble
+
+      - name: Install mypy
+        run: pip install mypy
+
+      - name: Run mypy (limited scope)
+        run: mypy
+
+      - name: Remove various tests on newer pythons
+        if: matrix.python-version == 'py311' || matrix.python-version == 'py312' || matrix.python-version == 'py313' || matrix.python-version == 'py314'
+        run: |
+          rm ./libensemble/tests/functionality_tests/test_local_sine_tutorial*.py # matplotlib errors on py312
+
+      - name: Run simple tests, Ubuntu
+        if: matrix.os == 'ubuntu-latest'
+        run: |
+          ./libensemble/tests/run_tests.py -A "-W error" -${{ matrix.comms-type }}
+
+      - name: Run simple tests, macOS
+        if: matrix.os == 'macos-latest'
+        run: |
+          pixi run -e ${{ matrix.python-version }} ./libensemble/tests/run_tests.py -A "-W error" -${{ matrix.comms-type }}
+
+      - name: Merge coverage
+        run: |
+          mv libensemble/tests/.cov* .
+
+      - name: Upload coverage reports to Codecov
+        uses: codecov/codecov-action@v6
         env:
-            HYDRA_LAUNCHER: "fork"
-            TERM: xterm-256color
-            GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-
-        defaults:
-            run:
-                shell: bash -l {0}
-
-        steps:
-        - uses: actions/checkout@v6
-          with:
-            lfs: true
-
-        - name: Checkout lockfile
-          run: git lfs checkout
-
-        - uses: prefix-dev/setup-pixi@v0.9.5
-          with:
-            pixi-version: v0.55.0
-            frozen: true
-            environments: ${{ matrix.python-version }}
-            activate-environment: ${{ matrix.python-version }}
-
-        - name: Install minq
-          run: |
-            pixi run -e ${{ matrix.python-version }} ./install/install_minq.sh
-
-        - name: Install libEnsemble, test flake8
-          run: |
-            pip install -e .
-            flake8 libensemble
-
-        - name: Install mypy
-          run: pip install mypy
-
-        - name: Run mypy (limited scope)
-          run: mypy
-
-        - name: Remove various tests on newer pythons
-          if: matrix.python-version == 'py311' || matrix.python-version == 'py312' || matrix.python-version == 'py313' || matrix.python-version == 'py314'
-          run: |
-            rm ./libensemble/tests/functionality_tests/test_local_sine_tutorial*.py # matplotlib errors on py312
-
-        - name: Run simple tests, Ubuntu
-          if: matrix.os == 'ubuntu-latest'
-          run: |
-            ./libensemble/tests/run_tests.py -A "-W error" -${{ matrix.comms-type }}
-
-        - name: Run simple tests, macOS
-          if: matrix.os == 'macos-latest'
-          run: |
-            pixi run -e ${{ matrix.python-version }} ./libensemble/tests/run_tests.py -A "-W error" -${{ matrix.comms-type }}
-
-        - name: Merge coverage
-          run: |
-            mv libensemble/tests/.cov* .
-
-        - name: Upload coverage reports to Codecov
-          uses: codecov/codecov-action@v6
-          env:
-            CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
-
-    spellcheck:
-        name: Spellcheck release branch
-        if: contains(github.base_ref, 'develop')
-        runs-on: ubuntu-latest
-        steps:
-        - uses: actions/checkout@v6
-        - uses: crate-ci/typos@v1.46.2
+          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
+
+  spellcheck:
+    name: Spellcheck release branch
+    if: contains(github.base_ref, 'develop')
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+      - uses: crate-ci/typos@v1.46.2
diff --git a/.github/workflows/extra.yml b/.github/workflows/extra.yml
index 8f9a27162..bd4cc601d 100644
--- a/.github/workflows/extra.yml
+++ b/.github/workflows/extra.yml
@@ -4,111 +4,111 @@ on:
   workflow_dispatch:
 
 jobs:
-    test-libE:
-        runs-on: ${{ matrix.os }}
-        strategy:
-            fail-fast: false
-            matrix:
-                os: [ubuntu-latest]
-                mpi-version: [mpich]
-                python-version: ["py311e", "py312e", "py313e", "py314e"]
-                comms-type: [m, l]
-                include:
-                    - os: macos-latest
-                      python-version: "py312e"
-                      mpi-version: mpich
-                      comms-type: m
-                    - os: macos-latest
-                      python-version: "py312e"
-                      mpi-version: mpich
-                      comms-type: l
-                    - os: ubuntu-latest
-                      python-version: "py312e"
-                      mpi-version: mpich
-                      comms-type: t
-                    - os: ubuntu-latest
-                      mpi-version: openmpi
-                      python-version: "py312e"
-                      comms-type: l
-
+  test-libE:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest]
+        mpi-version: [mpich]
+        python-version: ["py311e", "py312e", "py313e", "py314e"]
+        comms-type: [m, l]
+        include:
+          - os: macos-latest
+            python-version: "py312e"
+            mpi-version: mpich
+            comms-type: m
+          - os: macos-latest
+            python-version: "py312e"
+            mpi-version: mpich
+            comms-type: l
+          - os: ubuntu-latest
+            python-version: "py312e"
+            mpi-version: mpich
+            comms-type: t
+          - os: ubuntu-latest
+            mpi-version: openmpi
+            python-version: "py312e"
+            comms-type: l
+
+    env:
+      HYDRA_LAUNCHER: "fork"
+      TERM: xterm-256color
+      GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+    defaults:
+      run:
+        shell: bash -l {0}
+
+    steps:
+      - uses: actions/checkout@v6
+        with:
+          lfs: true
+
+      - name: Checkout lockfile
+        run: git lfs checkout
+
+      - uses: prefix-dev/setup-pixi@v0.9.6
+        with:
+          pixi-version: v0.68.1
+          cache: true
+          frozen: true
+          environments: ${{ matrix.python-version }}
+          activate-environment: ${{ matrix.python-version }}
+
+      - name: Install other testing dependencies
+        run: |
+          pixi run -e ${{ matrix.python-version }} install/install_minq.sh
+
+      - name: Install libEnsemble, flake8, lock environment
+        run: |
+          pip install -e .
+          flake8 libensemble
+
+      - name: Install gpcam
+        if: matrix.python-version != 'py313e' && matrix.python-version != 'py314e'
+        run: |
+          pixi run -e ${{ matrix.python-version }} pip install gpcam==8.1.13
+
+      - name: Remove test using octave, gpcam, globus-compute on Python 3.13
+        if: matrix.python-version == 'py313e' || matrix.python-version == 'py314e'
+        run: |
+          rm ./libensemble/tests/unit_tests/test_ufunc_runners.py # needs globus-compute
+          rm ./libensemble/tests/regression_tests/test_gpCAM.py # needs gpcam, which doesn't build on 3.13
+          rm ./libensemble/tests/regression_tests/test_asktell_gpCAM.py # needs gpcam, which doesn't build on 3.13
+          rm ./libensemble/tests/regression_tests/test_persistent_gp_multitask_ax.py # needs ax-platform, which doesn't yet support 3.14
+          rm ./libensemble/tests/regression_tests/test_optimas_ax_mf.py # needs ax-platform, which doesn't yet support 3.14
+          rm ./libensemble/tests/regression_tests/test_optimas_ax_sf.py # needs ax-platform, which doesn't yet support 3.14
+
+      - name: Start Redis
+        if: matrix.os == 'ubuntu-latest'
+        uses: supercharge/redis-github-action@v2
+        with:
+          redis-version: 7
+
+      - name: Run extensive tests, Ubuntu
+        if: matrix.os == 'ubuntu-latest'
+        run: |
+          ./libensemble/tests/run_tests.py -e -${{ matrix.comms-type }}
+
+      - name: Run extensive tests, macOS
+        if: matrix.os == 'macos-latest'
+        run: |
+          pixi run -e ${{ matrix.python-version }} ./libensemble/tests/run_tests.py -e -${{ matrix.comms-type }}
+
+      - name: Merge coverage
+        run: |
+          mv libensemble/tests/.cov* .
+
+      - name: Upload coverage reports to Codecov
+        uses: codecov/codecov-action@v6
         env:
-            HYDRA_LAUNCHER: 'fork'
-            TERM: xterm-256color
-            GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-
-        defaults:
-            run:
-                shell: bash -l {0}
-
-        steps:
-        - uses: actions/checkout@v6
-          with:
-            lfs: true
-
-        - name: Checkout lockfile
-          run: git lfs checkout
-
-        - uses: prefix-dev/setup-pixi@v0.9.5
-          with:
-            pixi-version: v0.55.0
-            cache: true
-            frozen: true
-            environments: ${{ matrix.python-version }}
-            activate-environment: ${{ matrix.python-version }}
-
-        - name: Install other testing dependencies
-          run: |
-            pixi run -e ${{ matrix.python-version }} install/install_minq.sh
-
-        - name: Install libEnsemble, flake8, lock environment
-          run: |
-            pip install -e .
-            flake8 libensemble
-
-        - name: Install gpcam
-          if: matrix.python-version != 'py313e' && matrix.python-version != 'py314e'
-          run: |
-            pixi run -e ${{ matrix.python-version }} pip install gpcam==8.1.13
-
-        - name: Remove test using octave, gpcam, globus-compute on Python 3.13
-          if: matrix.python-version == 'py313e' || matrix.python-version == 'py314e'
-          run: |
-            rm ./libensemble/tests/unit_tests/test_ufunc_runners.py # needs globus-compute
-            rm ./libensemble/tests/regression_tests/test_gpCAM.py # needs gpcam, which doesn't build on 3.13
-            rm ./libensemble/tests/regression_tests/test_asktell_gpCAM.py # needs gpcam, which doesn't build on 3.13
-            rm ./libensemble/tests/regression_tests/test_persistent_gp_multitask_ax.py # needs ax-platform, which doesn't yet support 3.14
-            rm ./libensemble/tests/regression_tests/test_optimas_ax_mf.py # needs ax-platform, which doesn't yet support 3.14
-            rm ./libensemble/tests/regression_tests/test_optimas_ax_sf.py # needs ax-platform, which doesn't yet support 3.14
-
-        - name: Start Redis
-          if: matrix.os == 'ubuntu-latest'
-          uses: supercharge/redis-github-action@v2
-          with:
-            redis-version: 7
-
-        - name: Run extensive tests, Ubuntu
-          if: matrix.os == 'ubuntu-latest'
-          run: |
-           ./libensemble/tests/run_tests.py -e -${{ matrix.comms-type }}
-
-        - name: Run extensive tests, macOS
-          if: matrix.os == 'macos-latest'
-          run: |
-           pixi run -e ${{ matrix.python-version }} ./libensemble/tests/run_tests.py -e -${{ matrix.comms-type }}
-
-        - name: Merge coverage
-          run: |
-            mv libensemble/tests/.cov* .
-
-        - name: Upload coverage reports to Codecov
-          uses: codecov/codecov-action@v6
-          env:
-            CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
-
-    spellcheck:
-        name: Spellcheck release branch
-        if: contains(github.base_ref, 'develop')
-        runs-on: ubuntu-latest
-        steps:
-        - uses: actions/checkout@v6
-        - uses: crate-ci/typos@v1.46.2
+          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
+
+  spellcheck:
+    name: Spellcheck release branch
+    if: contains(github.base_ref, 'develop')
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+      - uses: crate-ci/typos@v1.46.2
diff --git a/libensemble/tests/regression_tests/test_asktell_aposmm_nlopt.py b/libensemble/tests/regression_tests/test_asktell_aposmm_nlopt.py
index bbc2c89d1..390582143 100644
--- a/libensemble/tests/regression_tests/test_asktell_aposmm_nlopt.py
+++ b/libensemble/tests/regression_tests/test_asktell_aposmm_nlopt.py
@@ -20,8 +20,6 @@
 import numpy as np
 
 import libensemble.gen_funcs
-from libensemble.executors.mpi_executor import MPIExecutor
-from libensemble.sim_funcs import six_hump_camel
 
 # Import libEnsemble items for this test
 
@@ -32,7 +30,6 @@
 
 from libensemble import Ensemble
 from libensemble.gen_classes import APOSMM
-from libensemble.manager import LoggedException
 from libensemble.specs import ExitCriteria, GenSpecs, SimSpecs
 from libensemble.tests.regression_tests.support import six_hump_camel_minima as minima
 
@@ -53,75 +50,50 @@ def six_hump_camel_func(x):
 # Main block is necessary only when using local comms with spawn start method (default on macOS and Windows).
 if __name__ == "__main__":
 
-    for run in range(3):
-
-        workflow = Ensemble(parse_args=True)
-
-        if workflow.is_manager:
-            start_time = time()
-
-        n = 2
-
-        vocs = VOCS(
-            variables={"core": [-3, 3], "edge": [-2, 2], "core_on_cube": [-3, 3], "edge_on_cube": [-2, 2]},
-            objectives={"energy": "MINIMIZE"},
-        )
-
-        aposmm = APOSMM(
-            vocs,
-            max_active_runs=workflow.nworkers,  # should this match nworkers always? practically?
-            variables_mapping={"x": ["core", "edge"], "x_on_cube": ["core_on_cube", "edge_on_cube"], "f": ["energy"]},
-            initial_sample_size=100,
-            sample_points=minima,
-            localopt_method="LN_BOBYQA",
-            rk_const=0.5 * ((gamma(1 + (n / 2)) * 5) ** (1 / n)) / sqrt(pi),
-            xtol_abs=1e-6,
-            ftol_abs=1e-6,
-        )
-
-        workflow.gen_specs = GenSpecs(
-            generator=aposmm,
-            vocs=vocs,
-            batch_size=5,
-            initial_batch_size=10,
-        )
-
-        if run == 0:
-            workflow.sim_specs = SimSpecs(simulator=six_hump_camel_func, vocs=vocs)
-            workflow.exit_criteria = ExitCriteria(sim_max=2000, wallclock_max=600)
-        elif run == 1:
-            workflow.persis_info["num_gens_started"] = 0
-            sim_app2 = six_hump_camel.__file__
-            exctr = MPIExecutor()
-            exctr.register_app(full_path=sim_app2, app_name="six_hump_camel", calc_type="sim")  # Named app
-            workflow.sim_specs = SimSpecs(simulator=six_hump_camel_func, vocs=vocs)
-            workflow.exit_criteria = ExitCriteria(sim_max=200, wallclock_max=600)
-        elif run == 2:
-            workflow.persis_info["num_gens_started"] = 0
-            workflow.sim_specs = SimSpecs(
-                sim_f=six_hump_camel_func, vocs=vocs
-            )  # wrong parameter, but check we get error message
-            workflow.exit_criteria = ExitCriteria(sim_max=200, wallclock_max=600)
-            workflow.libE_specs.abort_on_exception = False
-
-        try:
-            H, _, _ = workflow.run()
-        except Exception as e:
-            if run == 2:
-                assert isinstance(e, LoggedException)
-                aposmm.finalize()
-                print("Passed", flush=True)
-            else:
-                raise e
-
-        # Perform the run
-        if workflow.is_manager and run == 0:
-            print("[Manager]:", H[np.where(H["local_min"])]["x"])
-            print("[Manager]: Time taken =", time() - start_time, flush=True)
-
-            tol = 1e-5
-            for m in minima:
-                # The minima are known on this test problem.
-                # We use their values to test APOSMM has identified all minima
-                print(np.min(np.sum((H[H["local_min"]]["x"] - m) ** 2, 1)), flush=True)
-                assert np.min(np.sum((H[H["local_min"]]["x"] - m) ** 2, 1)) < tol
+    workflow = Ensemble(parse_args=True)
+
+    if workflow.is_manager:
+        start_time = time()
+
+    n = 2
+
+    vocs = VOCS(
+        variables={"core": [-3, 3], "edge": [-2, 2], "core_on_cube": [0, 1], "edge_on_cube": [0, 1]},
+        objectives={"energy": "MINIMIZE"},
+    )
+
+    aposmm = APOSMM(
+        vocs,
+        max_active_runs=max(1, workflow.nworkers - 1),
+        variables_mapping={"x": ["core", "edge"], "x_on_cube": ["core_on_cube", "edge_on_cube"], "f": ["energy"]},
+        initial_sample_size=100,
+        sample_points=np.round(minima, 1),
+        localopt_method="LN_BOBYQA",
+        rk_const=0.5 * ((gamma(1 + (n / 2)) * 5) ** (1 / n)) / sqrt(pi),
+        xtol_abs=1e-6,
+        ftol_abs=1e-6,
+    )
+
+    workflow.gen_specs = GenSpecs(
+        generator=aposmm,
+        vocs=vocs,
+        batch_size=5,
+        initial_batch_size=10,
+    )
+
+    workflow.sim_specs = SimSpecs(simulator=six_hump_camel_func, vocs=vocs)
+    workflow.exit_criteria = ExitCriteria(sim_max=2000, wallclock_max=600)
+
+    # Perform the run
+    H, _, _ = workflow.run()
+
+    if workflow.is_manager:
+        print("[Manager]:", H[np.where(H["local_min"])]["x"])
+        print("[Manager]: Time taken =", time() - start_time, flush=True)
+
+        tol = 1e-5
+        for m in minima:
+            # The minima are known on this test problem.
+            # We use their values to test APOSMM has identified all minima
+            print(np.min(np.sum((H[H["local_min"]]["x"] - m) ** 2, 1)), flush=True)
+            assert np.min(np.sum((H[H["local_min"]]["x"] - m) ** 2, 1)) < tol
diff --git a/libensemble/tests/unit_tests/test_persistent_aposmm.py b/libensemble/tests/unit_tests/test_persistent_aposmm.py
index abcccb37b..900bfe070 100644
--- a/libensemble/tests/unit_tests/test_persistent_aposmm.py
+++ b/libensemble/tests/unit_tests/test_persistent_aposmm.py
@@ -373,6 +373,15 @@ def test_asktell_errors():
         pytest.fail("Should've failed on consecutive setup")
     my_APOSMM.finalize()
 
+    from libensemble.utils.runners import Runner
+
+    def gest_style_sim(_):
+        return {"energy": 0.0}
+
+    runner = Runner({"sim_f": gest_style_sim})
+    with pytest.raises(AttributeError, match="SimSpecs.simulator"):
+        runner.run(np.zeros(1), {"persis_info": {}, "libE_info": {}})
+
 
 @pytest.mark.extra
 def test_asktell_ingest_first():