Problems and problems

Hi guys
I've got some questions (these are the questions from my previous threads, but i didn't have time to read them), what should I do if 'ask for major' option is not functioning? If as an investigator, my sim searched for cases but the case is not relevant to his career, for instance, there is a case saying power studying, or home abounding (which are all related to studying a book that can only be obtained from the university), what can i do to solve this issue then?

Thanks for your help!

BTW, I didn't install any mods, but i do have installed some of the cc from your website, originally created by EA of course!! (I have tried uninstalling and installing the base game and the EPs and installing them one by on without CC or Mods. Even i did it, they still persist! AGGH ). Don't ask if i have correctly applied the Fix or not, I can assure you I have. I read your instructions very carely, and do it step by step!

I almost forgot, is there a way to solve invisible magicians, acrobat and singers who are performing for tips? Thanks for your help again!!