Delete all permissions you might have created for your usergroups (Context Access) and (Resource Access) and (Element etc...).
Flush Permissions ...clear cache..use a different browser to view your site
TinymceWrapper: Complete back/frontend content solution.
Harden your MODX site by
passwording your three main folders:
core, manager, connectors and renaming your
assets (thank me later!)
5 ways to sniff / hack your own sites; even with renamed/hidden folders, burst them all up, to see how secure you are not.
Be careful not to delete any of the default permission entries or you could be locked out of the site. The only ones that should affect templates are Element Category Access ACL entries, so I would just delete those (there are no default ACL entries of that type).
If you messed with Media Sources, that might also be a cause.
