FPSCaracther blueprint always empty after closing it

Hi

I’m following the FPS C++ (A new, community-hosted Unreal Engine Wiki - Announcements - Epic Developer Community Forums) tutorial from the wiki and each time I close the BP_FPSCharacter which is a FPSCaracter blueprint
it cannot be opened again, well it can but it would be empty.

Here i create a new FPSCarachter blueprint, double clic on it

https://dl.dropboxusercontent.com/u/91396766/ue4/emptyBP/n3-1.jpg

I do my stuff, compile, save, then hit the cross on the tab to close it

https://dl.dropboxusercontent.com/u/91396766/ue4/emptyBP/n3-2.jpg

Then if I want to re-open it again to change something all I get is this empty window

https://dl.dropboxusercontent.com/u/91396766/ue4/emptyBP/n3-3.JPG

What am I missing?

Note that my projectile blueprint which was created/modifier/closed the same way can be opened/closed as much as I want

Thanks

I have the exact same issue. Have you been able to solve it? It is very annoying!