I've tried a bit of the methods listed in the post, but with no success, and with that I finally decided to check the crash logs....
I've noticed this and can't compare it to anything in the post. help would be appreciated.
"
[0004.95] Critical: appError called: Failed to find file for package Core for async preloading.
[0004.95] Critical: Windows GetLastError: The system cannot find the path specified. (3)
[0005.71] Log: === Critical error: ===
Failed to find file for package Core for async preloading.
Address = 0xf9dca799 (filename not found) [in C:\Windows\System32\KERNELBASE.dll]
Address = 0x963c9b35 (filename not found) [in D:\Games\KillingFloor2\Binaries\Win64\KFGame.exe]
Address = 0x9637efd5 (filename not found) [in D:\Games\KillingFloor2\Binaries\Win64\KFGame.exe]
Address = 0x9635defb (filename not found) [in D:\Games\KillingFloor2\Binaries\Win64\KFGame.exe]
Address = 0x96ff92ed (filename not found) [in D:\Games\KillingFloor2\Binaries\Win64\KFGame.exe]
Address = 0x96ffc336 (filename not found) [in D:\Games\KillingFloor2\Binaries\Win64\KFGame.exe]
Address = 0x96ffb70b (filename not found) [in D:\Games\KillingFloor2\Binaries\Win64\KFGame.exe]
Address = 0x96ffb45b (filename not found) [in D:\Games\KillingFloor2\Binaries\Win64\KFGame.exe]
Address = 0x96ffb4ca (filename not found) [in D:\Games\KillingFloor2\Binaries\Win64\KFGame.exe]
Address = 0x97002fc5 (filename not found) [in D:\Games\KillingFloor2\Binaries\Win64\KFGame.exe]
Address = 0x97722afb (filename not found) [in D:\Games\KillingFloor2\Binaries\Win64\KFGame.exe]
Address = 0xfa267bd4 (filename not found) [in C:\Windows\System32\KERNEL32.DLL]
Address = 0xfc04ce51 (filename not found) [in C:\Windows\SYSTEM32\ntdll.dll]
Address = 0xfc04ce51 (filename not found) [in C:\Windows\SYSTEM32\ntdll.dll]
[0005.71] Exit: Executing UObject::StaticShutdownAfterError
[0005.71] Exit: Executing UWindowsClient::ShutdownAfterError
[0005.71] Log: appRequestExit(1) "