Railworks 2 in Game Mode
Railworks 2 used to work in Game Mode. Without Game Mode turned on, I'd get a Bitdefender popup to say it had terminated a 'csc.exe' file because it was deemed harmful and I'd get an Unhandled Exception error as Railworks itself opened.
After a fresh install of Steam and Railworks, (because the Steam client seemed a bit slow to connect and update with their servers), I get the Unhandled Exception even with Bitdefender Game Mode turned on.
The Steam client works fine. The problem occurs when I launch Railworks 2 itself.

The Unhandled Exception seems to be failing to find a .dll file in my
'AppData/Temp/ folder. Each time this happens, the name of the .dll file changes, (which is probably normal).
Railworks support have done all they can. Therefore, I can't eliminate Bitdefender from being the cause, especially since the Unhandled Exception used to happen with Game Mode off and then not happen with Game Mode on.
I have Bitdefender Total Security 2011.
Operating System: Windows 7 Professional, 64-bit (Service Pack 1)
DirectX version: 11.0
GPU processor: GeForce GT 430
Driver version: 275.33
DirectX support: 11
CUDA Cores: 96
Core clock: 700 MHz
Shader clock: 1400 MHz
Memory clock: 700 MHz (1400 MHz data rate)
Memory interface: 128-bit
Total available graphics memory: 2815 MB
Dedicated video memory: 1024 MB DDR3
System video memory: 0 MB
Shared system memory: 1791 MB
Video BIOS version: 70.08.29.00.30
IRQ: 16
Bus: PCI Express x16 Gen2
Please let me know if you require any further information.
Goff