I got an error when i try to install my coppermine gallery 1.3.5
ERROR
You installed the standalone Coppermine into your Nuke portal.
Please download and install a CPG Port: CPG for PostNuke OR CPG for PHPnuke Than I click on the link
http://prdownloads.sourceforge.net/coppermine/cpg1.3_port_e107.zip?download
I use postnuke 7.2
but got the same issue.
Sorry to tell you Timmy but you can't install it in a phpnuke portal.
So also: http://forum.coppermine-gallery.net/index.php?topic=23075.0
And the large topic:
http://forum.coppermine-gallery.net/index.php?topic=13667.0
there is a solution for postnuke users, see http://forum.coppermine-gallery.net/index.php?board=14.0