Hello, i have big problems with creative, anytime i run the World of Minecraft.exe file in the World of Minecraft client, it says "The registryrefers to a nonexistient Java Runtime Envoriment installation or the runtime is corrupted" and when i play in the browser all what happends is that the browser crashes, before the exe file when it was a jar, then i had no problems starting it up, i have the same problem for the exe launcher for minecraft beta but theres a jar launcher which works, I use Windows 7 4GB Ram