Monogame Samples Content Load Issues

Hi Guys

I am having trouble starting the sample apps running. There is a content load exception on trying to load Fonts/Hud although I have found that any other content also fails to load (in the same solution). Not sure what to post to aid suggestions but here it goes:

Platformer 2D from the MonoGame.Samples repo. I am trying the Windows GL sample although as far as I can tell the settings are all the same in the DX version too (which loads correctly!). I have checked the folder paths and everything is there, .NET is 4.5 (I have also tried others) but I keep getting the same result!

Is there any known issues with MonoGame.Framework.WindowsGL