I'm trying to upgrade a 2.12 installation to 3.nn (I've tried 3.0.13 and 3.1.1 from suggestions in different posts).  The upgrade process always seems to go fine with no errors.  I can even get to the home page and login page with no errors.  When I try to logon with any userId/password it says the the login is invalid.

I've searched several forums for two days and tried many things but nothing seems to work.  The only solution I see in any of the forums is to copy the old MachineValidationKey, MachineDecryptionKey and objectQualifier sections from the old web.config.  The only problem is that the web.config from 2.12 had no MachineValidationKey, MachineDecryptionKey keys to copy and the objectQualifier was set to "".

Is there anything else that I am missing?  This has been driving me crazy for the past 2 days.

Thanks Crispy.  I'm not trying to go from 2 to 3.0.13 and then to 3.1.1 though.  I've tried upgrading directly from 2.1.2 to each version independently.  I can't log in right after the upgrade from 2.1.2 to whatever version of 3 I go to.

Correct me if I'm wrong, but the machinekeys don't actually get "set" during an upgrade do they?  They are just "there" in the release.config when you rename it to web.config.  That's all I am doing, of course then I go in and change my connection string info.  My 2.1.2 web.config was all the stock version so I'm not actually merging my old with my new.  I'm just using the new.  Maybe I'm wrong about this, but that is my understanding of it.