Neverwinter Nights
If NWN won't start for some reason, or will crash shortly hereafter, try the following.
Create a shortcut to nwmain.exe located in the NWN install folder. In the "Destination"/"Target" line, add +TestNewModule "123456". The line should fully read C:\NeverwinterNights\NWN\nwmain.exe +TestNewModule "123456" if C:\NeverwinterNights\NWN\ is your NWN install folder.
Tried and tested on XP/Win7
Taken from Darth Malignus at the gamebanchee forums.