Some variables to consider here, as possibilities:

1. 26,000 tunes is a lot. It's possible that, even with the MaxFid patch, you're hitting some kind of limit, such as database size.

2. 3.x alpha software was never finished and is still buggy. I stopped using it because of crashes like that (on a much smaller number of tunes), each crash would trash my FIDs and playlist structure when they happened.

3. Which software did you use to try to synch with your player? Did you use the 2.10 Emplode software? That's known to be buggy. You should be using Jemplode instead.

If you can get the player back to a working state, see if a manual database rebuild fixes the issue temporarily, then, see if you can successfully upload a single tune into an existing playlist.

Manual database rebuild instructions:
http://www.riocar.org/modules.php?op=mod...;faqent=220#220