I'm testing M82 and found a problem with some of the new code.  It seems to be
related to trying to perform a new task while an edit widget is still 'active'.
 Here are the steps to replicate;

1) Open a new Impress document.
2) In the title area where it says "Click to add title", type in something but
do not accept the text by hitting ENTER.  It's still in edit mode.
3) Take your mouse and try and right click in the "Slides" area on the left edge
and it crashes every time.

I was attempting to add another slide when this was discovered.  I'm attaching a
screenshot, and the information gdb reported.