On 4/13/2010 11:41 PM, Alexander Lazarević wrote:
> I feel it is tricky to update the SystemProgressMorph using MC while
> it is actually in use during updating itself. I got bitten by this a
> few times and then was reluctant to do any more changes because of the
> difficulties that could arise.

It's not tricky at all. The next time you need to reset it from MC, 
simply use "SystemProgressMorph future reset". This will work nicely 
(try it with the snippet I sent earlier).

Cheers,
   - Andreas