[BUG]-CrestronOnvif.dll Invalid Image

[cdenig]

Was this bug identified in a specific build version?
2.21.0

Describe the bug
A clear and concise description of what the bug is.
CrestronOnvif.dll is reporting an Invalid Image when Essentials starts. This has been happening for a while, but is more an annoyance and has not seemed to impact system performance.
Error reports regardless of config loaded.

Stacktrace

[2025-12-04 10:23:11.984][EROR][App 1] Unable to load assembly: /simpl/app01/CrestronOnvif.dll - Invalid Image

Essentials Version: 2.21.0
PepperDash Core Version: 2.21.0
Essentials Plugin Versions:
epi-vytio-iptv.4series Version: 0.6.0
KpmgRoom Version: 1.10.2
epi-videoCodec-ciscoExtended.4Series Version: 2.4.0
PepperDash.Essentials.DM Version: 1.5.4
epi-nanolumens-hseries.4Series Version: 1.1.0
epi-crestron-io.4Series Version: 2.1.1
epi-cisco-cli.4Series Version: 1.4.2
epi-display-samsung-mdc.4Series Version: 1.5.2
epi.analogWay.aquilon.4series Version: 1.3.1-cleanup-logging.1
Tesira-DSP-EPI.4Series Version: 3.3.0
epi-lutron-leap.4Series Version: 1.0.2
NvxEpi.4Series Version: 3.10.2

To Reproduce
Steps to reproduce the behavior:

1. Install Essentials
2. Monitor console at Error Level
3. See Error reported

Expected behavior
No error is expected.

Screenshots
NA

Additional context
NA

[andrew-welker]

All the DLLs in the program folder are scanned when Essentials starts up to find devices/factories. This one is a Crestron-provided DLL that is loaded from the Crestron nuget packages. We can probably add something that filters this specific assembly out so the error message doesn't show up anymore.