Unable to upgrade from 8.2.2.5 to 9.1.0.0

When I upgraded to 9.0.0.0 it was so slow that I could not use it so I went back to 8.2.2.5 which works great. I decided to try the new 9.1 release. I installed it as an upgrade and when it starts, it just hangs and goes "not responding". I uninstalled and did a clean install...same thing. I don't know what is so different from version 8 that makes it not even function, but I'm stuck with the older version until someone can figure out what the problem is. I'm running XP Pro, 32-bit with 1GB of RAM. Anyone have any ideas?

Try these threads for ideas on what to investigate:

resource.dopus.com/viewtopic.php ... light=slow
resource.dopus.com/viewtopic.php ... light=slow
resource.dopus.com/viewtopic.php ... light=slow
resource.dopus.com/viewtopic.php ... light=slow