I currently have a problem when I go to upload printer drivers to the
broker within iManager, the "add from file" button is unresponsive. my
browser reports an "error on page" down on the status bar and the details
of that are "error: object doesn't support this property or method".

I've done some searching and I'm well aware of TID 3018152 (formally
10100923) which is supposed to solve this exact problem. I went though the
steps of downloading the latest iManager plugin (dated 29Nov2006) and
installing this. I restarted Apache/Tomcat and went to try again... the
problem still persists. My searching showed this seemed to always solve
the problem, so now I'm left with little thought on what to try next.

I'm running NW6.5 SP5, and iManager 2.5.20050809. The current iPrint
plugin lists as

Any recommendations?