I am using release 3.03 of the Phoca Gallery plugin and i have the same poblem.
The solution is in the file phocagallery.php of the plugin.
Linenumber 614:
Code: Select all
$document->addStyleSheet(JURI::base(true).'/components/com_phocagallery/assets/js/slimbox/slimbox.css');
Code: Select all
$document->addStyleSheet(JURI::base(true).'/components/com_phocagallery/assets/js/slimbox/css/slimbox.css');