Everyone who is having a login problem or upload permission problem try this. Go to your admincp and in the vbulletin options menu click on the cookies and HTTP header options. Set your your cookie domain up like this: ".yourdomainname.com" and make sure your path to save cookies is "/". Of course don't use the quotation marks and insert your domain name where it says "yourdomainname" and after you have everything setup save it

. Then go to the config setup in coppermine and down near the bottom you'll see cookies settings. There is a input box labeled "Path of the cookies used by the script" in that box make sure it has this: "/".
Next open up your vbulletin30.inc.php file and make sure you have everything entered corrctly. In the init.inc.php file make sure you have the vbulletin30.inc.php uncommented. After doing all of this make sure you clear out your cache and clean your cookies of your machine. Then when you return to your site make sure you first sign in at the vbulletin side of things first. Then go to your coppermine gallery and check that all your albums have the "Visitors can upload files" checked in the properties of each album. After that you should be good to go and I hope this helps.
Bigwrenn
www.bigdoubleurc.com
www.3onthebay.com