Help!

[queen-hermione.livejournal.com]

I'm having a problem with capping, and I thought I'd see if anyone here could help me out. I use PowerDVD 5.0 because of the capability to advance frame by frame. When I opened it to do caps today, it gave me a select playlist menu, and I couldn't select the DVD in the drive. I've never had this problem before, and I can't figure out what to do. If anyone could help me out or recommend another software to use, I would greatly appreciate it. Thank you!