DX_Auth local versus production server

[eluser]wwwald[/eluser]
Hello,

I developed a reservation system for some local community site, all testing done on my local computer (WinXP, Apache 2.2, PHP 5.2, Mysql 5.1). It relies on DX_Auth for user/admin authentication.

Now, the system works on my local computer, so I transferred it to the "production" server (Apache 1.3, PHP 5.2, MySQL 5.0). And now the authentiation system broke, since it mentions "Username not found" for the regular admin accounts that I used on my local system.

Regarding these accounts: I transferred the accounts to the production server by literally copying over the users table. The password salt is unchanged. The account names are definitely there, I can see them in the users table... but still they're not recognized in the login system. This check is done with is_logged_in(), so something must go wrong there.

Can anyone point me in the right direction on how to fix this?
I'm afraid I probably did not do the transfer "the way it should". Can anyone suggest the right approach to transfer a DX_Auth system between server environments?

Thanks a lot,
wwwald