When I try uploading larger resolution image 3264x2448 (850k in size), it looks like the GD library is failing when creating a thumbnail.
PHP Fatal error: Out of memory (allocated 31457280) (tried to allocate 13056 bytes) in /home/sites/site name.com/public_html/community/library/XenForo/Image/Gd.php on line 57
The Maximum Attachment Image Dimensions is on default blank settings, so it looks like a GD lib problem.
I get a similar problem with the nextgen gallery in Wordpress 3.0.1, but I can resolve that by specifying ImageMagick, which is on the server.
Is there any way I can switch to ImageMagick to handle the image handling and thumbnails ?