Just happened.. all the tabs are empty - Where it should say 'files','elements','resources' for example, each tab is there but blank. Same for buttons 'save' etc when editing templates, resources. Tried logging out, deleting cookies for the modx host, still gone. What have I done?!
OK - solving it was as simple as Site->Clear Cache. Just wonder how it got like that in the first place!
Ah yes, apologies - Revolution 2.1.3
