Glad to help - those error messages are rather severe - its no wonder you're getting problems.
I did more tests. I can repeat the error. These warning messages come up only when the Lobby Enhancement Mod (LEM v4.4) mod is loaded.
I'm using the non-Steam Forged Alliance version 1.5.3599 and Sorian v2.1.1 on Windows 7 64 bit with no anti-virus, and playing Skirmish (no multiplayer).
I downloaded LEMv4.4 on the chance that my copy was corrupted. It made no difference. I downloaded the newest version, LEMv4.6. It has other issues that I'd rather not deal with. I couldn't even get it to work (it would hang on the 'connecting screen').
The next logical question is: am I the only one experiencing this problem. To check if you have the same problem, start FA by adding the /showlog parameter in your desktop shortcut to the game like so (right click on the game icon, select Properties, Shortcut tab, Target field):
"D:\Supreme Commander - Forged Alliance\bin \ForgedAlliance.exe" /showlog
The quotes are important because Windows hates spaces between words.
Since these are just warnings, I've ignored it in the past but I suspect these problem contributes to why my PC hangs 1 out of every 4-5 long skirmish games. My PC has 16 GB of memory, lots of disk space, and the CPU is powerful enough for this game 4.3 GHz quad core Intel.