Game not working

Ok my game loads it's been repaired and everything. Once loaded I go to build mode it never loads . Game still looks in live mode.When I click build mode to try to go bk to live the mange worlds icon disappears . So I went to go to exit game since things wasn't working  and that save and exit game menu wouldn't come up.So end task with task manager  and reload game complete same steps to check if would happen again and it did so basically I cannot play my game after it loads