Well, the editor in greenfoot ( i think it is bluej )
becomes black and remains so without showing me
the code (sometimes over an hour).
After Restarting Greenfoot it works again.
Next time it happens, when you close Greenfoot (but before you re-open it) can you find your debug log and send it to support@greenfoot.org? Details on how to find it on this page:
http://www.greenfoot.org/support
