Crashing Sometimes ...
The reader was OK on my computer but kept crashing when I synched my Sony.
After reinstalling the program 4 times, I called Customer Support.
They told me to completely delete the program off of my computer and then to Install it fresh. As soon as I synched, I had a problem again.
I deleted all of the books from the library, and it worked.
I added all of the books in groups (epub / prf / adobe digital / etc.) As soon as I loaded a group of PDFs, it crashed when I synched.
I removed all of the PDFs and it was fine again (without reinstalling). I have since added back in several, and I believe I have identified the specific PDFs that were causing the problem, they were all from the same source.
It's been a couple of days now, and I have not had another problem.
I do not know if those PDFs had some kind of copy protection, but as far as I can tell, they were the culprit.