Easy Edit Suite Fails to open with error-Squiz_Matrix_API is not defined

We have a new installation of Squiz_matrix v4.12.2. Easy Edit suite, current version, is installed.

 

But Easy Edit Suite fails to open, with this javascript error:

 

 

Timestamp: 15/01/2013 11:30:12 AM
Error: ReferenceError: Squiz_Matrix_API is not defined
Source File: http://<domain_name>/__data/ees/easyedit.min.js
Line: 377

 

Can anyone advise how to correct this, or suggest a path for further investigation. Please?

 

 

 

Try add URL to "Web Services Folder"