(UE 4.10) unable to click on "create project", error says I can't use letters from my pass

I’ve just downloaded unreal version 4.10.2 and when I go to create a new project the icon to create project is unselectable and there is an error message saying that I cannot use any letters in my file name that are in my pass (assuming it means password, I have tried putting in only letters that are not in my password).