Advisory rekordbox 5.1.1 crashing on macOs

Ok,  5.1.1 looks great, but unlike other updates, it looks like something has corrupted my library as it keeps crashing.  I've manually re-installed 5.0.3 and restored the library before my upgrade.

I was trying to analyze all phrases in the library and crashed multiple times in the process.  I'm suspecting that this ssomehow corrupted the library.  Some songs were left stranded in the analysis process (had previews missing and a blank % analysis indicator).  When those songs loaded it would cause it to crash. 

It makes this version rather UNSTABLE.