With the modifications I had done to vbbridge.php, it seemed I got everything to work just fine with the subdomains. And I looked at the files in the error I listed above. Ended up changing the name of the function in the functions_gallery.php, so that works now as well. I also had to change the name of a file in the vbbridge.php file (its now just registration.php in MU, versus registration_function.php). So it all looked like it was working decently. I got a post to go to the forum, so that was exciting. But, I think I came up with an issue I'm not can be worked around with MU... But you never know. That's where you guys come in
For each blog created, it creates new SQL tables, but they are just numerical equivalents to the standard tables (ie, wp_users is now wp_users, wp_1_users, wp_2_users, and so on). The mod adds the information just fine to the wp_XXX tables, but not to the numbered ones. Therefore, it doesn't seem like the user gets logged in to the blog. Any ideas on this one?