I add a vimeo url, and I get an error - Could not resolve host - png
If you get this error, please upload an image, then copy the embed code from the Vimeo video page, and paste it to the images embed code field. Please see this page for more info.
This issue will be fixed in the next release. If you need a patch to fix this issue now, please email Ignite Gallery support, and send your gallery version number.