I am still having a problem with this. I have tested against a database that has been upgraded via the Hotfix_12_0_39.exe tool, which works fine, and then tested the same codebase against a database that was upgraded by running the Hotfix_default.sql script (the Hotfix_separated.sql script is empty so not run) and I get the error:
"Uncaught ReferenceError: Sys is not defined at HTMLFormElement.onclick"
This indicates to me that there is an issue when upgrading the database using the hotfix script. Can someone advise on this or is this something I need to raise with support, thanks.