Re: CTD when I start the campaign
Geoffrey might have a point: the crash happens while processing the factions in the descr_strat faction. In fact the only file that does get modified apart from the log is that file. I can't think of any reason why the very first game works and afterward it's total crashes, even new campaigns.
That file is not provided by the installation - locate it and delete it, then try again. Another angle would be to delete the [video] section in the mods CFG file (opens with Notepad) and reset the video settings via the in game 'video' option.