The good news is I can replicate it on my windows 98 box
> (and a windows ME box). I've had no troubles on XP. It is
> triggered by importing matplotlib.backends._gtkagg. That's
> all I know so far, but I should be able to figure it out
> from here.
I rewrote _gtkagg using cxx and this seems to have fixed the problem
(at least on my test systems). Flush the old, and try:
FYI, this should have your errorbar fixes in as well.