I am having the same problem accessing the SetHTML and GetHTML when the editor is on a hidden TabPanel after a postback.

I can populate the editor in my codebehind, but cannot access on the client end with SetHTML or GetHTML.

 

This is starting to be a deal breaker for us.  We are still working on other options.  I really like this editor and do not want to research another one, but may need to if there is not a workaround for this problem.

 

Is there another way to access the text?