Just installed using the "MonoGame for Ubuntu Development Build" on Linux Mint 17 (Ubuntu 14.04.3 LTS) with MonoDevelop 5.10
When I use an image (only tried jpg and png) in the MonoGame Pipeline tool and try to build, I get the following error
Importer 'TextureImporter' had unexpected failure!
Other asses (mp3 and wav) seem to build just fine. What am I missing?