Win 7 64bit, having the same issue.
my logs mainly end with
[3636.75] Critical: appError called: Rendering thread exception:
Fatal error!
Address = 0x0 (filename not found)
[3636.75] Critical: Windows GetLastError: The operation completed successfully. (0)
[3636.76] Critical: appError called: Rendering thread exception:
Fatal error!
Address = 0x0 (filename not found)
[3636.76] Critical: Windows GetLastError: The operation completed successfully. (0)
[3636.76] Log: === Critical error: ===
Rendering thread exception:
Fatal error!
Address = 0x0 (filename not found)
Oddly one of them ends with something else
[1614.09] Log: === Critical error: ===
Fatal error!
Address = 0x12884f6 (filename not found) [in C:\Program Files (x86)\Renegade X\Binaries\Win32\UDK.exe]
Address = 0x3e96f363 (filename not found)
Address = 0xbe1ef3d0 (filename not found)
Address = 0x12bf473 (filename not found) [in C:\Program Files (x86)\Renegade X\Binaries\Win32\UDK.exe]
This is the only CTD (Crash To Desktop) I have experienced thus far playing RenX.
Logs zipped and attached.
Logs.zip