My CACHe wallet has stopped working.  I'm running the most recent version (5.0.0).

Symptoms: It syncs up to a point and then stops.  It seems to sync up to ~1 block left, then goes to ~257 blocks left, and sits there doing nothing.

Steps taken so far: I've tried deleting the database folder, .lock file, blk*.dat files, and peers.dat   
That seems to work at first, but then the same end result happens.

There are many orphaned blocks in my debug file.

Any advice?