I changed to mantra. Since then I can not clickto >> Design >>> Themes in the Backoffice.
After then I disabled all plugins. Same Problem. If i try to click “Themes” then show me a white Page with Error message “Critical Problem bla bla….
Mantra has been problematic since the update. I can not do anything right now, because I can not change the theme. does anyone know the problem? Think about if I changed my themes. Have more often problems with Cryout Themes in the past. Such things just not happen.
The bla bla…. bit was the most important part of the error message as it could indicate what has actually gone wrong.
Without clear error information any discussion is just a guessing game (code error? incompatibility? PHP version? server limitation?)