I am using ipython -pylab, and can reproduce this error with the following
ax.set_position([0,1,0,1]) # this is should be [0,0,1,1]
# traceback here, thats expected...
# fix my mistake
# now moving the mouse pointer over the image causes the crash report to be
The first call to set_position I got the order confused with imshow's extent,
which is [xmin,xmax,ymin,ymax] instead of the usual [xmin,ymin,dx,dy]. Like I
said, its a bizarre set of circumstances, but I thought I should report it.