Yeah... the error means the database wasn't sourced completely. Uninstall EQEmu, open up a command prompt, and type mysql. Then, at the mysql prompt type:
drop database emusp3;
Then, run the installer again. Don't close the window with the sourcing message. That will end the batch. Grab a smoke, some dinner, as it could take upwards of 20 minutes to finish. As long as that message is up, it is still working, unless your machine locked up
