New alpha version up (same url), with better undo support, not just for freehand painting but for all object editing.
first go here:
works very well
couple minor things:
if I go to another image, the drawing work is not saved (I have that setting activated where it saves automatically when you click on another shot).
Hmmm after messing around and at least 8 trys it now saved when I clicked other file. It doesnt show changes on the thumbnail though  does now after a bit more clicking over and back [/edit]
. Also, I am unable to remove the writing. You say "you can save and come back to a file and clear or erase any freehand painting"
- I dont see how (?)
not sure how many undo's it has - looks like 10.
If press Ctrl+Z more than 10 times, each extra click reduces the number of redos (even though the extra Ctrl+Z's are having no effect).Example
I make 20 marks
I press Ctrl+Z 15 times - 10 marks are removed
I press Ctrl+Y 15 times - only 5 marks are shown again - the first 5 press seem to get swallowed by the superfluous Ctrl+Z presses
(hope that makes sense)