I've updated nothing, rebooted a couple times, tried making new or edit old maps all come to the same odd glitch. I cant see anything in the top/right/front windows except the odd model which only became visible by toggling show models in 2D. Only think I've not tried yet is deleting SDK and redownloading it. Anyone have previous experiences with such behaviour?
Screeny:
http://yfrog.com/5s38507315p
Edit:
The black grid under the tree is me selecting the group of objects, used to colour is as red instead of grid it black.
Edit:
Never mind, its fixed now. SDK did an update patch or something this morning and all objects are visible again.