Re: speedbar loses images -- how to debug?

[Dave Love]

First look in *Messages* for error messages that might occur from
loading the image.  Then examine the text properties where the image
should be, to see whether they make sense.  (If
list-text-properties-at doesn't DTRT because you can't put point in
the right place, examine the value of an appropriate call of
buffer-substring to see what's there.)