Fixing Text Problems in PlayStation Mobile Studio

I installed the PlayStation Mobile SDK 1.20.00 the other day, which comes with a customized and branded version of MonoDevelop called PlayStation Mobile Studio. I noticed though that there were severe text issues - missing text on pages, menus or in dialogs.

This seems to be an outdated or broken install of GTK#. I downloaded the latest version (2.12.21) from the Mono site:

It asked me if I wanted to remove or repair, so apparently it was already installed? (Presumably when I installed Xamarin Studio for something else)

I ended up removing and reinstalling this version and now Text renders perfectly fine.