ImageCreateFromJpeg error

I am trying to use the following piece of code: $img_resized = imagecreate($img_new_width, $img_new_height); $img_source = ImageCreateFromJpeg($pa_strDocroot.$pa_strReadFold."/".$this->Name); imagecopyresized($img_resized, $img_source, 0 , 0 , 0 , 0, $img_new_width, $img_new_height, $this->Width, $this->Height); The code runs fine on my Windows machine, but ImageCreateFromJpeg() errors on the server. I am sharing a server, and they have it set to not show any errors, so I can't tell you what the exact error message is. I have been able to establish that: - GD is installed--the other image functions work; - I believe it is a later version of GD that supports JPEGs, since ImageCreateFromJpeg exists as a function [does that follow?]; - The paths are correct, since they work on my machine, and work in other places; - The write folder has full permissions set, just to be safe; - The images in the read folder have read permissions set. Is there some sort of a temporary directory as well, where permissions have to be set? A few sites have mentioned a --with-jpeg-dir configuration setting. Do the permissions for that need to be checked? Any help would be appreciated. Scott