I stopped using timidity because it often "crashed" for some reason,
i.e. even if it's in the startup services I found out that it was not
running.
So the first thing I would do is checking if it the timidity daemon is
running. If it's running you should see something like this:
$ ps ax | grep timidity
2291 ? S 0:26 /usr/bin/timidity -Os -iAD
22813 pts/2 S+ 0:00 grep timidity
My guess is that you can see only the "grep timidity" line.
In this case start timidity:
sudo service start timidity
Reload the Midi ports in Fresco and select timidity.
Or switch to qsynth and forget timidity :)
HTH
--
Federico