Eye processes crash on Windows 10 on startup

[mattem86]

Hi,
we have the following problem. With the Windows 10 versions 20H2 and 1909 we observe that after every reboot, the eye processes crash as soon as they are opened with no logging in the pupil logs. When we disconnect and reattach the cameras, they start as expected.
There is a entry in the Windows Eventlog for each pupil cam:

Name der fehlerhaften Anwendung: pupil_capture.exe, Version: 0.0.0.0, Zeitstempel: 0x5d24a292 Name des fehlerhaften Moduls: libusbK.DLL, Version: 3.0.7.0, Zeitstempel: 0x535d2fa1 Ausnahmecode: 0xc0000005 Fehleroffset: 0x000000000000a904 ID des fehlerhaften Prozesses: 0x7a8 Startzeit der fehlerhaften Anwendung: 0x01d6bcd61b880ae5 Pfad der fehlerhaften Anwendung: C:\Program Files\Pupillabs\pupil_capture.exe Pfad des fehlerhaften Moduls: C:\WINDOWS\SYSTEM32\libusbK.DLL Berichtskennung: 2923a82a-1321-4d22-82ac-82048ffc33a6 Vollständiger Name des fehlerhaften Pakets: Anwendungs-ID, die relativ zum fehlerhaften Paket ist:

(Sorry for german language)

Details:
pupil_capture.exe 0.0.0.0 5d24a292 libusbK.DLL 3.0.7.0 535d2fa1 c0000005 000000000000a904 7a8 01d6bcd61b880ae5 C:\Program Files\Pupillabs\pupil_capture.exe C:\WINDOWS\SYSTEM32\libusbK.DLL 2923a82a-1321-4d22-82ac-82048ffc33a6

On Windows Build 1906 everything worked and works fine (there is the same machine which is not updated yet).

What helps is to reconnect the cameras each time after a reboot. Then the eye processes will not crash.

Do you have any further ideas?
Best wishes

[mattem86]

Since this is occasionally happening on 3.5.1 on Windows I want to bump this issue a bit. Is there a update to libusbk maybe? Does anyone else experiences this?

[papr]

Hi! There are newer libusbK versions available here. You can install them manually using Zadig (see install instruction steps 2-7 from here).

With the -skip-driv command line argument, you can prevent Capture from attempting to install the bundled drivers.

@mattem86 Could you give the newer libusbK versions a try and check wether the issue goes away for you?