I haven't personally looked at it but I've heard its basically just a module that creates native TitanPanel plugins from LDB objects just like Broker2FuBar does. And before anybody asks the reason Broker2FuBar isn't part of FuBar is that it is in Ace3 and would need to be rewritten in Rock to be directly integrated into FuBar. But Rock is dead so it would be a silly and mostly pointless thing to do.
!BugGrabber and BugSack, (BugSack is a LDB plugin now and does not natively support FuBar, but it works perfectly with Broker2FuBar) if you set BugSack to save errors between sessions then you can get the error log from your savedvars. I agree that this is very likely not a FuBar problem at all but probably a plugin or library one.