sengian:
I've been able to reproduce the problem, but I'm afraid I've some bad news. After some hours of testing, I've come to the conclusion that it's probably the reader running out of memory. I ruled out PRS+ by uninstalling it, and ruled out Calibre + plugin by changing the cache file manually. But even then, disconnecting from usb after making the changes crashed the reader. I did put 4328 epubs on the SD, so I may have been pushing the device a bit further than you did. And it's likely that the limit is lower when PRS+ is loaded than without it, simply because less memory is available. This could explain why in your case it only crashed with PRS+ loaded. In all, it seems this is a problem that can be avoided, but not fixed.
PS: you can enable logging by putting user.config in /Beta folder on IM. The only line needed is the one that changes defaultLogLevel; you can comment out or remove all the others.
jackie_w:
I'm glad you like the new additions, enjoy
