Server information: Windows 2008 / IIS 7 / PHP 5
After uploading an image using either the flash or browser uploader, the resulting thumbnails work perfectly but the uploaded full sized image results in a 500 internal server error. I have found when looking at the image permissions through Windows Explorer, the owner and file permissions are not being set. Manually forcing an owner and setting file permissions fixes the issue, but manually setting permissions on every uploaded image is obviously not the ideal scenario.
Has anyone else had this issue where uploaded thumbnails work, but the full sized image does not? and if yes, were you able to find a solution?
I have tried the upload in several browsers with the same result. I have also disabled all plugins and verified proper folder permissions on all wordpress folders.