Hello and welcome back to the community. 
This post here has solved the majority of installation errors just like yours, give it all a go: I can’t Install WeMod / "There was a error installing the application" - #2 by Ravenfyre.
Hello and welcome back to the community.
This post here has solved the majority of installation errors just like yours, give it all a go: I can’t Install WeMod / "There was a error installing the application" - #2 by Ravenfyre.