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I am trying to upgrade from 4.08.04 to 6.02.05.
I'll explain the steps I've followed as best I can.
1. Created a backup of our current SQL 2003 database, and restored it to our SQL 2005 database, as 6.02.05 requires 2005. ( I'm guessing the problem is here.)
2. Cloned the directory for our site, and hosted it on the same web server (ran into problems with machine keys when using a different server)
3. Changed the web.config to reflect the new location of the database.
4. Attempted to run the install wizard on the new non-live directory. I get to the login page, and when I type in the superuser account I just get
"An unhandled error has occurred."
Now if we type in anything but the admin login, it just resets the boxes, and does nothing. If we type the admin login, it goes to that page.