reset plone to access theming control panel
plone, plone-4.x
Solution
As the message at the top of that page says, the theming control panel is never themed. You can get to it directly by URL, e.g. `http://localhost:8080/Plone/@@theming-controlpanel`. Then disable your theme on the 'Advanced settings' tab.
Alternatively you can disable Diazo for a page by appending `diazo.off=1` in the query string, e.g. `http://localhost:8080/Plone/front-page?diazo.off=1`
Problem
I am new to theming in plone 4.3. I was experimenting and set up a rules.xml file to read an existing index.html theme that I had - it of course did not theme correctly and worst - I cannot find a way to log back into the theming control panel. The index.html contents appear on the plone page (without the css somewhow), but I want to go back and remove the rules. I tried to delete the rules.xml file, but that did not help - any suggestions?