I'm not sure how many people even use Roxio Toast anymore, but I recently realized they came out with a version 16. (I'd been using version 11 this whole time.) Anyway, the problem I've run into is that it seems I can't get any of the newer versions to run properly on my Mac Pro unless I launch them from a new user account I made for troubleshooting purposes. If I launch Toast 14, 15 or 16 from my usual account, it installs successfully and gets as far as the "splash" screen that acts like a wizard to easily select a project type. But as soon as it tries to launch the main application after that, it crashes. (After 16 wouldn't work for me, I downloaded older versions from their support site just to see if one of them worked any better for me.) Roxio tech support seems to be pretty useless on this one, simply suggesting I follow some steps to fully uninstall an existing copy before installing the new one. (I did all of that; removing files from under the Library folder in various places, etc. Made no difference.) I found someone else with the same issue, except with a very old release of Toast (version 8 I believe). In their situation, deleting Quicktime extensions/components resolved it for them. I believe it was DiVX codecs causing the crashes for them. I temporarily moved all of the codecs out of the folder they were in to see if that helped with my issue, but it didn't. I can't figure out what it is with my normal user account that it doesn't like. Anyone with any experience fighting this problem?