PipeLine, I use to convert PNG to XNB keeps causing problem. would you please check the files uploaded and tell me what is the problem?
Well i noticed that there is a FreeImage.dll file in the MonoGame Pipeline, check if is there if isnt, try reinstalling monogame
It's likely you're missing the VC++ 2012 redist on your machine. You can download it from the Microsoft website: https://www.microsoft.com/en-us/download/details.aspx?id=30679
The FreeImage assembly depends on it and if one of the dependencies is missing when loading a full you get this confusing exception.