You should change your server name in the .ini files, don't give the commando via the .bat file... we encountered this problem before @ the CT servers. The problem in the .bat file is that, once you give 1001 commands in the commandline, the UE3 engine screws up.
Vehiclelimits are set in the map settings by the way.
Also, did you notice that there are 2 ?? after vehiclelimit?, this should be just 1
Try to minimise the amount of commands, search for the variables in UDKGame.ini and UDKRenegadeX.ini and set them there.
After you've done that, come back here and post your progress.