I tried to find solution for this problem by searching internet and this forums but I couldn't find it. So, I had to ask for this.

Details about error message:
Fatal error: Call to undefined function: getcfg() in /home/*****/public_html/components/com_rsgallery2/lib/j15backport/includes/application.php on line 354

Joomla 1.015, components installed: RSGallery, Sobi2, XMap, Artio JoomSEF, HotProperty etc (maybe it could be collision with some other component).

I saw demo of RSGallery2 and I was impressed with it - it is only gallery that suits to my needs.

Hi

I also faced the same error, but it got solved when i changed the site template.

The template i got the problem is JA Iolite  from joomlart.com

When i changed the site template it worked

hope the above will solve your problem also

Regards

Kannan