thanks for responding, i already did a fresh install but the problem still persist. It seems that map compiler doesn't want to have a level made mainly with blocks. I guess the compiler cannot process huge level of blocks as if it has it's limit because when I delete some portions of my level it will build fine but when I try to add some building blocks it will crash when compiling. I hope somebody will give me an explanation why and hopefully a solution. So I have no choice but to split my map into two. have a nice day!