I just did a new installation of 2.5.6 in a Joomla version 1.5.22.

I was able to get a simple gallery of uploaded image files to work without much trouble.  I haven't messed with the options much, but it seems pretty straight forward.

However, I have had nothing but problems getting a Flickr set to display.  I created the API key, and entered it in the plug-in parameters.  I placed the code, but all I get is an error message saying it cannot find the folder:

rkm.tangodesigns.com/events

I disabled the plug-in, then re-enabled it, and that got it to work, displaying the thumbnails, but the pop-ups did not work, giving me a Flickr message in the window, that the image was not available.

I then changed the set, and encountered the same problem.  This time, the disable trick did not work.

I hope somebody can help?

Could you pm me super admin access.

Sent.  Thank you.