Fatal db error after Install - Please help

[mgurry]

Hi, I've made several fresh installs of the software today and keep receiving this error after performing the install and clicking to go to the login page:

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Fatal error :
There was an error while processing a database query.

I've switched to debug mode, and this is the info that I get:

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While executing query "SELECT (ug.group_id + 5) as group_id FROM `detmusic_MySQL`.phpbb_user_group as ug LEFT JOIN `detmusic_MySQL`.phpbb_groups as g ON ug.group_id = g.group_id WHERE user_id = 2 AND user_pending = 0 AND group_single_user = 0" on 0

mySQL error: Access denied for user: 'detmusicgallery@localhost' to database 'detmusic_mysql'

I am configuring the gallery to work with my phpbb2 message board. Can anyone help with this error? I'd like to get the gallery up and running asap.

Thanks,
Mike