I had problems installing 5 upgrade 9130 particularly with the tools install which repeatedly failed. After a restore from a clone (ALWAYS clone your boot drive before an upgrade), I tried this which works fine ( I have done it three times on 2 clones then my boot drive): 1. Go to your applications folder. 2. Trash the 3 Parallels programs - Parallels Desktop.app, Transporter and Image Tool apps. The latter 2 are in the Parallels folder while the Parallels Desktop app is in the applications folder. 3.Install the 9130 package from the 9130.....etc., DMG file. 4.Start your VM (e.g. Windows) Parallels Tools will auto install. LET IT install which takes a lot longer than you'd think (a LOT). 5. Restart the VM It works. As long as you only trash the app files your license and so forth survives the install just fine. 6. Finally empty the trash (the 3 Parallels app files). Installing over existing Parallels leads to horrible results and this version unlike the last one doesn't want to install within your VM session which is kind of inconsistent.