[Pharo-project] old windows in image not responding

[Ben Coman]

I have just opened a Pharo image on Windows 7 that I haven't touched in 
months.  This was originally derived from the Pharo.1.2.1.OneCick, and 
the TitleBar > 'Display Version Information'  indicates "About Pharo on 
Win32 - Pharo4.1.1 from Mar 3 2011". 

I assume the image was left it in good working order, but now the 16 
open windows (including a pinned World Menu) are not responding to any 
mouse click.  Clicking over them brings up a fresh World Menu as if I 
just clicked on the background.  From this fresh World Menu, I can open 
a properly functioning Workspace and Browser.  It seems like a snapshot 
"old" windows has become the background image, except that from the 
window-bar and bottom of screen going "Windows > Collapse All Windows" 
does collapse the "old" windows - and "Windows > Expand All Windows" 
restores them, but they still cannot be selected.  One of the "old" 
windows is a dialog box "Question: Save changes before quitting 
Yes/No/Cancel" which is the single "old" window I can select.  Choosing 
Yes or No closes the image and choosing Cancel keeps me in the image, 
but still with none of the "old" windows selectable.   I naively 
speculate that I was closing the image and walked away while "save 
changes" dialog was open, and in the meantime the power dropped out to 
the machine.

It would be nice to regain access to some code snippets in the "old" 
Workspace, but just closing all the "old" of them would be okay.
Your thoughts on possible causes and alternatives to fix would be 
appreciated. 

cheers, Ben