[Evolution] Evolution won't start due to configuration mismatch

[Mathieu De Zutter <mathieu dezutter org>]

Hi,

I'm running evolution 2.4.1 on Ubuntu (packaged by Ubuntu). Evolution 
stopped working since yesterday: when I try to run it, it throws an 
error box mentioning 'Evolution cannot start. Your system configuration 
does not match your Evolution configuration'.

Ok, some more info on what happened the last days, which may be relevant 
or not at all:
I had trouble connecting to the exchange server at work, so I eventually 
rm'd ~/.evolution and ~/.gconf/apps/evolution to restart with a clean 
slate (evolution and all related processes where shut down). I set up to 
exchange account with ximian-connector-setup, ran evolution and 
configured some more things. It ran fine.
Then I compiled mail-notification from _debian_ sources (the ubuntu one 
is too old), referring to an extracted _ubuntu_ evolution source to have 
evolution support in mail-notification. Eventually it compiled and I 
installed it. It ran fine.
And then suddenly... on yet another boot up, evolution won't start anymore.

I'd appreciate some to tell me how I can figure out what's going wrong, 
and why evolution thinks the configurations don't match.

--
With kind regards,
Mathieu