Blank Blueprint Editor

Hey folks,

In one of my Unreal 4.10 projects whenever I open up the full blueprint editor for my default pawn, I get a completely blank window:

Any ideas what might cause this, or how I can fix it?

I’ve tried rebuilding the project (it’s C++ based) without any luck, and I can create a second instance of the blueprint (derived from the c++ class) and everything seems to work without any problems.

The game itself works, I just can’t make any modifications at the moment.



From the ‘View’ menu I opened up the class defaults window, and clicking on the ‘Open Full Blueprint Editor’ link seems to have restored everything.