Update pycatfile.py

Author: Kazuki Suzuki Przyborowski

pycatfile.py

@@ -250,7 +250,10 @@ def get_default_threads():
 if('PYCATFILE_CONFIG_FILE' in os.environ and os.path.exists(os.environ['PYCATFILE_CONFIG_FILE']) and __use_env_file__):
     scriptconf = os.environ['PYCATFILE_CONFIG_FILE']
 else:
-    scriptconf = os.path.join(os.path.dirname(get_importing_script_path()), "catfile.ini")
+    try:
+        scriptconf = os.path.join(os.path.dirname(get_importing_script_path()), "catfile.ini")
+    except TypeError:
+        scriptconf = None
 if os.path.exists(scriptconf):
     __config_file__ = scriptconf
 else: