I fixed my installation by running it in administrator and moving the files from temp to games. (Hope this helps.)
Isn't the launcher running in admin mode by default. And what do you mean by "temp to games", the temp folder contains downloaded unextracted archives.
I know the launcher refused to work until I right clicked it an ran it in admin mode. Derp the moving part must not be needed I might have mixed up the order of what I did.
I should be more specific, it ran but it skipped a bunch of files when installing/verifying and installed them after running it in admin mode.
Sorry I mean to say it registered new files that it didn't before as if it had skipped over them during the install
