This is usaually a key error for C++ when it is trying to write a file and fails. What seems to me it that a .dll is missing. If you have another OS (other then WinSrv08) with this game installed then it would be a good idea to dictate the .dll’s and see if any are missing. It could also be a corrupt .dll.
I realize that this may not have anything to do with it, but here is a site that talks about Supreme Commander missing .dll fix.
First i would like to thnx for everything is done here. Its great work, and did help me a lot in setting w2k8 as a workstation.
I do have problem with this game and w2k8, and just wanna know if someone else maybe have had such problems.
This image could tell you everything: http://img149.imageshack.us/my.php?image=faerrorkj1.jpg
Memtest+ did 3 pass without error, latest beta driver from nvidia 174.74(which are already WHQL for nvidia 9 series). Latest Realtek audiodriver R1.90.