We are getting an error in our Knowledge build and while we are working in Conosole. The error is:
Unable to find reloaded metadata object 'ClassTypeBehaviourProxy' with unique identifier <GUID>. Please restart application.
This is caused by the XML design cache being out of date. To fix the issue just delete all the folders and XML files located at:
C:\Documents and Settings\Default User\Local Settings\Application Data\Touchpaper
On the server. This can be done in a live environment without a scheduled system down. To prevent the problem recurring try to avoid making design changes whilst having caching switched on.