After I added a button with ribbon workbench on the email entity on friday the email entity does throw an error on loading. The IE crashes with the error message
Error: The property "toLowerCase" of an undefined or zero reference cannot be retrieved.
The Chrome browser did load the site but the email format bar is missing then:
Now I already deactivated all custom JS logic, removed the button/command and also imported the last stable solution backup in the system. Nothing fixed the issue. So I thought that maybe copy and paste the needed files from another CRM server could fix this issue. Does anyone know which files do I need to copy?
I already tried these files:
RibbonCommand.xml
RibbonContextGroup.xml
RibbonCustomization.xml
RibbonDiff.xml
RibbonRule.xml
RibbonTabToCommandMap.xml
EDIT: I just realised, that you cannot even select the email field, to write something.