As seen in the first screen shot, the flickr set is working.  Therefore, i know the API key is correct.

In the second screenshot, I am getting the "There was a problem rendering your image gallery. Please make sure that the folder you are using in the Simple Image Gallery Pro plugin tags exists and contains valid image files. The plugin could not locate the folder:"  Error message on this page:  50.116.122.123/~drjill/index.php?option=com_k2&view=item&id=68:dogapalooza#.UAXH-zGcGRb

I have already used AdminTools to fix permissions.

Using sigpro 2.5.6 / k2.5.7  / j2.5.6

I can't figure out what the difference is.

Figured it out.

The permissions on Flickr were not set to public.

So if you see that error in joomla you might need to check flickr settings.

Hi,

What do you mean with "The permissions on Flickr were not set to public." ?
Regards,

Hi,

What do you mean with "The permissions on Flickr were not set to public." ?
Regards,

1. login to flickr
2. select your set
3. choose Edit / Batch Operations
4. choose Batch Edit /Change Permissions
5. choose "Anyone (Public)"
6. click "Change Permissions"

Better yet, if you or your client is using a macintosh with iPhoto then here is the workflow:
www.modernmagic.com/blog/joomla-blog/iphoto-to-flickr-to-k2.html

Thanks, I guess this is not the same problem, because using another plugin I'm well able to show the gallery.
I started a new thread for my specific problem.