Hi! Since wednesday i installed a Obtical Bay for my iMac. I installed OS X on a OCZ SSD and i put i home folder on the harddrive. Now it so that I have trouble I can not use the DVD player that comes with OS X. I can only notice that reads: A valid DVD drive could not be found. (-70012) then i get a other message that says: DVD player quit unexpectedly. Click Reopen to open the application again. Click Report to see more detailed information and send a report to Apple. I have an external reader which I have tried to play a dvdfilm on VLC but it just lags here is your picture on it: http://img811.imageshack.us/i/screenshot20101218at815.png/ I also have one. dvdmedia file from a video from a DVD which I got with the program Rip it that I got last summer. It can be played back on OS X's dvd player software. Someone who can help me? I will be truly happy. You would make my weekend. Thank you in advance.