Dunno why, but ever time I try installing the expansion packs, I end up borking the files/game which no longer allows to run any EP/game. For some reason, my windows doesn't even react to uninstallation prompts whichever method I do. The main problem is whether I boot up whichever latest pack, it asks me to insert a disk (when it is inserted). Any clue how I can fix this?? These slew of problems are driving me nuts.

You need a noCD to run the EPs with DRM. Also make sure you patch the basegame fully before installing EPs. You need Grumpy loader for that. What steps exactly have you taken so far?

Ok, so I seem to solved it. When I’ll finish it with up apartment, I will let you guys knows!