I have the same problem, but don't use displayimage.php
I think I've some hints to help the developers to solve the problem:
I've uploaded the file "1-crestbig-2.gif" and the followinf file were created in the image directory:
Code:
Content visible to verified customers only.
The images refered by are:
Code:
Content visible to verified customers only.
Please note the difference: 1
_1_crestbig_2.gif <-> 1
-1_crestbig_2.gif