I have tried this. Now it will not recognize my 4.6, 4.9, or 4.10 installs. I made sure launcher is installed to my E: drive, but I had to move it because installer forces to C: drive. This is very bad that you cannot choose install directory. I cannot get launcher to even see installed files now. When it went to repair it was downloading to Program Files again even though launcher is running from E: drive now.