Opening webcam crashes applications

[emilianavt]

Hi!

When I try to open a webcam in any of the OpenFace 2.0.0 or 2.0.1 tools, a window appears, saying it is loading the webcams. After a short while the application crashes with the following exception, with the loading window still open:

An unhandled exception of type 'System.ArgumentException' occurred in PresentationCore.dll

This is on Windows 8.1 with .NET 4.6.2. Opening a video in OpenFaceOffline.exe works very well.

[emilianavt]

It stops crashing if I copy an older version (3.0) of PresentationCore.dll into the OpenFace folder. Otherwise it probably attempts to load a newer (4.0) version of the DLL which doesn't seem to be compatible.

[TadasBaltrusaitis]

That's interesting, OpenFace is compiled with .NET 4.6.2, I wonder what was causing the issue. What stage exactly was it crashing on? Does it list the available webcams?

[emilianavt]

It doesn't list anything, so I assume it's one of the functions used for displaying the webcam widgets that make it crash.

Edit: Actually, it stopped working with the older version of PresentationCore too. I'm not sure what exactly is going on there.

[pocketmoon]

Same here -from event viewer:
Faulting application name: OpenFaceDemo.exe, version: 1.0.0.0, time stamp: 0x5af4a5ec Faulting module name: CppInerop.dll, version: 0.0.0.0, time stamp: 0x5af4a5e1 Exception code: 0xc0000005 Fault offset: 0x00000000000b1aa0 Faulting process id: 0x1110 Faulting application start time: 0x01d3fa76a82ed285 Faulting application path: E:\development\2018\OpenFace_2.0.0_win_x64\OpenFaceDemo.exe Faulting module path: E:\development\2018\OpenFace_2.0.0_win_x64\CppInerop.dll Report Id: ead7494c-6669-11e8-85eb-e03f4977eb8b

[TadasBaltrusaitis]

Should be fixed in the new version, please re-open if persists.