[butterflyblonde]

I've had that same problem right from when I uploading umteen smilies into the database.

It could be a rogue smilie causing it but I would hazard a guess it may be the sheer volume of them causing it, it didn't do this before I went on a smilies mission.

If you close it and try re-opening that may sort the problem out, I usually find it happens most when I try to scroll through the list before allowing them to upload into the pop up box, it's best to wait a short while until they are all appearing before scrolling.

I have no idea how I can detect any troublesome ones that may be bugged though unfortunately.