I have many successful experiences of using MyDVD to create ISO files for DVD. First-time attempt to create ISO file for Blu-Ray. Three menu items from AVCHD home video, one slideshow. Preview has no problems with any of these 4 menu items. I select "burn" and omit actual disc option, as I expect to later burn several copies of a family wedding. Virtual hang on movie 2 of 4, always at 23%. Task Manager shows VW13 to be still creeping along with some small amount of I/O activity, with CPU activity way low. Fast computer, 9gb RAM, <1/3 used. No other apps running.
I need troubleshooting suggestions.