I need a little help guys. I was working on my map yesterday and all was good. I compiled it tested it then added some dynamic water to it but I think I made the water too big. So my map only loads the 2d view in radiant not the 3d. It also wouldn't compile either. So I opened up the .map file and deleted the dynamic water and then recompiled it. It compiled but it still wont open in radiant. If anyone know how to fix this please let me know. Otherwise I'll just place my map in a new map as a prefab but it's not going to stamp due to the sheer size of the map. 

Check in your. map again at the very top for your world spawn setting and make sure nothings wrong with them. I recently had the same issue with radiant not loading my project. And had also just placed a couple brushes with a water texture. Just sayin check your world spawn settings

Thanks you so much!!!! It was the worldspawn. Works great now.     

Thanks you so much!!!! It was the worldspawn. Works great now.     

Cool man glad I could help!