I selected to add a directory to alambic. Ok, I added the 'My Music' folder. While the db building was doing the job, I tried to click the 'Random Mix Mode' tickbox. Alambic crashed with the exception:
'Object reference not set to an instance of an object.'
Logged In: YES
user_id=1657101
Originator: NO
This is know issue related to the multi-threaded access to the database. That should be corrected soon since we moved to the a new version of the database layer.