No, the thread suggested reinstalling GD. Coppermine is not generating this error, it is simply reporting what PHP has to say about the validity of the picture.
I would do the following:
1. Go to demo and save one of the large pics from it. Then try to upload that picture to your gallery. If it fails, we will definitely know this is a server issue, and not a client encoding issue.
2. In any event, upgrade PHP to the most recent version if possible. You are many versions behind, and there have been many bug fixes for this function since then. While you're at it, take the time to upgrade to GD2, unless you are keeping GD1 for its GIF creation. The lateset PHP/GD has returned support for reading GIF, so you could convert to PNG if you use GD for other applications. But don't worry about changing GD if you don't have time.
3. If the problem continues with PHP 4.3.4, you might also check the bug list at
www.php.net to see if your issue is related to any of the bug reports for getimagesize().
http://bugs.php.net/search.php?search_for=getimagesize&boolean=0&limit=10&order_by=&direction=ASC&cmd=display&status=All&php_os=&phpver=&assign=&author_email=&bug_age=0I have a feeling that this is most likely an encoding issue, and an up to date function might cure the problem. However, this is the first report of this type of behavior we have seen on this forum, so please understand this is a guess.