Error message when login to G2 when embedded in joomla

I have Gallery2 embedded into Joomla using the latest version. I have selected to have the login visible when viewing from the joomla page. I receive this message:

"The requested URL /gallery/1 was not found on this server". Now I have figured that the link for the login is directing it to the wrong url as there is no "gallery/1".

Where in the coding would I find this so it can be changed to the proper url?
And what would be the correct url to the login.

You can see the problem here:http://pooch-e-tv.com/index.php?option=com_gallery2&Itemid=52. Click the login link to see what happens.