Another guess here as well, did you run eqemu_server.pl*and do some of the updates?
Another option would be take that file to a new folder and run it using existing or new database to make sure all server files are correct.
I believe in the past I have improperly updated the server config file and it has caused me issues logging in. (Only thing you'd need to update would be the server name if you run that eqemu_server.pl*file).
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