Lucky you! 100% of the time for me it crashes ^^. In this post we discussed it a little: http://www.aeriagames.com/forums/en/viewtopic.php?t=1617297
basically just make sure SF's resolution is lower than your comp's resolution, BUT, if that's not the problem, then you can hop onto the "Screwed-for-now" boat like me and many others! You might have this problem if you're running a Windows XP Computer; I have Windows XP Service Pack 3, and this is an old Dell; no game for SF has ever fully loaded on here, though I have loaded the game all the way to the lobby and can access all lobby features like the gun shop and character shop, etc. However, on my brother's computer, a Windows XP SP3 computer also, I can load approximately 1 game and play, 1 game, before SF sends me this error! The only difference is that his Dell is newer, so meh. Other than that, try upgrading to Vista or Windows 7! Which will only cost a lot of money, I'm sure. Memphis created a post called "State of Soldier Front Address" or something; hopefully if enough people post in there about the Windows XP problem (seems like only XP users have experienced this) it'll be put on the list, you know?