Huh. I submitted a query, had a few back-n-forth emails with GOG about it, with the final email saying they'd investigate it and resolve the problem as soon as possible. Yet only by chance did I end up checking this thread after progressing to season 2 and find out that a patch exists.
Maybe I was an idiot for thinking that by helping GOG and providing savegames to assist with fixing the bug, they'd perhaps email me to let me know of the update. Oh well.
EDIT: Oh and regarding the lack of double-clicking to run, I think Blackdrazon is right about how they most likely just replaced the .exe with an older version. After the patch is installed, SamMax105.exe is the only file to have a timestamp from early 2008, whereas the .exe files from the rest of the season's game files have timestamps from late 2009.
Post edited July 19, 2012 by RapidReload