Hm, I tried re-downloading and re-installing the whole package, and it still doesn't work. I'll have to take this thing with me to the lecture today and hope they'll propose a fitting solution-- chances are they'll redirect me to an alternative modelling tool, even though Maya has my preference.

For now, thanks for helping, gster. If there's anyone else who has suspicions, please let me know by replying. Hopefully this problem will be solved someday soon, so that I can enjoy my membership here further.