LexiconDj 1.6.16 + Engine 4.0 sync Failed

i try to sync my Lexicon Playlists to Engine 4.0.
The process starts with “syncing playlists” and ends after 5min with “sync Failed”
Is Enngine 4.0 incompatible at the time ?

I did not find any problems with Engine 4.0 so I do think it is compatible.

Try turning off the Add album art option if you have it enabled, some users are having trouble with it. Otherwise, deleting your Engine database will work too, but a re-analyze in Engine is required. This is the database folder: Music/Engine Library/Database2