Crashing when switching between items (.pdf issue?)

I am using Scrivener Windows 1.6 beta.

  • Scrivener crashes when there is a lot of different items (folders, articles, pictures, .Pdf documents) in Binder and I am using keyboard to switch between these items. I put cursor on the lowest item and press down ArrowUp-key - Scrivener crashes. On another look, it seems like the only item causing problems is .pdf document. It seems like loading the pdf-plugin takes too much time and Scrivener/Win7 can’t handle the time requirement.