white screen (help)

[Holz]

hey guys i have a problem.
when i try to open unreal editor, the program runs but the front, the side and the 3d mode have disapiarded and there is  white screen where the views use to be. i can look the textures and the static meshes but when i open a map is all white.
i've tryed to reinstall rc again and download the patch but don0t work..
help!!!!!!!!

[RC-1266]

View --> Viewports ---> Configure... ---> Ok
Should work, at least it did to me.