First plugin I used to show pics on my page was WPG2. I didn’t use it much as soon I discovered d13gallery plugin which offers options that much better meet my needs. I can have thumbnails linked to full size photos which is perfect solution for me.
Recently I wanted to use WPG2 again and I encountered problems. I couldn’t neither download pics nor to display it. More over pics that I already had on my site didn’t linked to Gallery2 any more…
It took me few loooong hours to find out reason ;). Which - of course - was so obvious!
I didn’t take into consideration fact that in the meantime I moved my site from sub-folder to main domain. When all my attempts to link thumbnail with Gallery2 again failed I looked to ‘Manually Configure/Adjust Embedded Paths’ option available at WP admin panel.
Yupi!
It looked like that:
Gallery2 URL: http://www.domain.com/gallery2/main.php
URI to Gallery2 Embed Page (wp-gallery2.php): http://www.domain.com/sub-folder/wordpress/wp-gallery2.php
Gallery2 File Path: /usr/name/public_html/gallery2/
On Gallery Error Redirect to: http://www.domain.com/sub-folder/index.php.

All I had to do was to remove /sub-folder from URI to Gallery2 Embed Page and URl used in case of Gallery Error…