Thread:Project:Support desk/Uploaded images aren't uploading to server; returning a 404 file not found when I click on the link/reply (3)

I added the $wgTmpDirectory line, but I didn't create images/tmp folder to see what it would do. When I tried to upload an image, the error message on the upload screen was "Error creating thumbnail: Unable to save thumbnail to destination". After adding /tmp and setting to 777, the original issue continued-- blank thumbnail and a bad link. Also, no files were created in /images or /tmp (I read that they are deleted from /tmp automatically?).

I'm not sure exactly how to use the debug commands, because other than the bluehost 404 page, no obvious error message comes up.

Suggestions?