The first thing I tend to to when I get an exception in Recorder that I do not understand is to try to find out if someone else has had the problem. This works fine if the topic title includes the key words I'm looking for but otherwise it's quite hard. Also the search facility does not appear to work properly since my recent posting on the 'Class not registered' exception does not come out if I type 'Class not registered' into the search bar - although this may simply be because it's only recently been added...

Anyway, I personally would find it very useful if there was a list of exception the likely cause. Perhaps this is something for the wiki site?