UBB.threads PHP Forum Software Community Forums UBB.threads Bug Reports Fixed Bugs [FIXED for 7.2b5] Clicking on gallery image brings up empty page

Using IE 6

When in a gallery, at the top is a picture, clicking is supposed to show enlarged image.
This brings up another webpage but instead of the image there is a small red X at top left within that window.

Why is is not showing the image ?

Thanks