Problem with Edit This Page

[Bob Kemp]

Hi everyone,

I went to edit a page in one of my sites and received the following error 
on clicking the ETP button:

Macro error: Can't call the script "editMessageForm" because it doesn't 
define a parameter named "flLimitSubjectLength"

I tried other sites - all the same.  ETP has worked on all sites until 
yesterday. The only thing that I have changed recently is the site urls for 
these sites. I can't find any relevant documentation - can anyone help?

Thanks,

Bob