phpMyAdmin - Error: An error occurred while authentication!

[syslin]

Hello all,
I just install my first ispCP panel on CentOS 5.5 by following the guide here:
http://isp-control.net/documentation/sta...ion:centos

The server is working, I could login to the system, create user (reseller) and even create a user (host).

I logged in with the user (a domain user) and create a new MySQL database include db user and password.
When I'm trying to click on the phpMyAdmin link in the user CP I'm getting the error:
Error: An error occurred while authentication!

I rename the original /var/www/ispcp/gui/tools/pma directory to pma_new and downloaded an old version of phpMyAdmin and locate it instead in the same place /var/www/ispcp/gui/tools/pma, that's because my server is running with PHP version 5.1 and the new pma need PHP 5.2 as requirement.
Then, I copied the file:/var/www/ispcp/gui/tools/pma_new/config.inc.php to the /var/www/ispcp/gui/tools/pma/config.inc.php

Any idea? Can any one give me an hint where the ispCP logs are located?

Thanks,
Miki