i am also having this problem anyone know how to fix?
Welcome to the community. 
You have not provided enough information for us to assist you effectively. Such as what you are doing, what happens when you do that, and what error messages you are getting.
These issues are, 99% of the time, caused by a security program, on your PC or network.
See here: I can’t Install WeMod / "There was a error installing the application" - #2 by Ravenfyre.