Did you see any errors or warnings (related to the attribute filter) in the debug output?
Take a look in the cache directory (probably var/<i>yoursiteaccessname</i>/cache). Are there two files classattributeidentifiers_<i>yoursiteaccessname</i>.php and classidentifiers_<i>yoursiteaccessname</i>.php? Has the webserver write access to this folder? Remove these two files and try again.
Have now got it working - the site.ini file was pointing to var/news and I changed it over to var/ccb and it started working - those files were absent from the var folders.
Why specifiying a different cache folder should make a difference when it worked on the proevious server I dont know, but hey it works!
