KF Friend is getting runtime error crash on startup.

Hello. My friend has recently installed Killing Floor so that we could play the event.



Currently he is getting a crash + error on startup.





What we have tried so far:

1. Deleting the System Folder.

2. Deleting Killing Floor.ini

3. Complete reinstall.

4. Verifying Game Cache



Here is his log



Some help would be appreciated.

Thank you.