Unrelated to Mikal's question, IV:MP 0.1 T3 is not working for me. GTA IV works fine, but when I start IV:MP during loading when a black screen, the version and time appear, the game crashes. Shutsdown, no error message. I tried compatibility to Windows SP3 on GTAIV.exe, LaunchGTAIV.exe and LaunchIVMP.exe but not of any use either. I have administrative rights on LaunchIVMP.exe. The game I'm using is installed off some time ago, during which I re-installed my windows multiple times, but as said before, Single Player works fine.
Help?
Played with compatibility/admin rights more and restarted. Works now.