Problem with bridging with phpbb3

[Ulenka]

I downloaded cpg1.5.12, intsall in data base, where is phpbb3 data base.
Everythings ok, but when I click on Itegration manager, this is an error:

Fatal error: Cannot redeclare class cpg_udb in /var/www/newsite/data/www/new.romanticcollection.ru/gal/bridge/phpbb3.inc.php on line 41

Coppermine install: http://new.romanticcollection.ru/gal/
Bridging app install: http://new.romanticcollection.ru/forum/
Coppermine version: cpg1.5.12

BridgeManager settings:
Bridge app URL:  http://new.romanticcollection.ru/forum
Relative path to your bridge app's config file:  ../forum/
Cookie name or prefix:  /
Use bridge app custom groups?:  1 

Please, help!

[Ulenka]

The fatal error messages appearing after the last step, after I turn on bridging.
Then, I am logout. I try to log in, and the system redirect me on my forum, I put login and password, then, system redirect me into my gallery, but I am not login there. This action is with admin and with user.

[Ulenka]

Line 41 in phpbb3.inc.php is:

Code Select Expand

class cpg_udb extends core_udb {

[Ulenka]

And now I've found the reason:
My cookie name or prefix is phpbb3_rb33
That's work!