[Max Taxable]

Disabled or not, it was still calling its own files.

If it is the CKeditor mod, and the issue still occurs after uninstalling this mod.. That makes no sense to me, unless it permanently changed files

That's what I said, earlier in the thread. Some of these Mods do auto-rewrites of just about any file on your system including templates, js files, PHP files, you name it.

Uninstalling sometimes reverts the changes but not always.

Do you still have all hooks disabled? I just tested the edit button, working. Image insert and video insert, working.