Unity 5.0 Beta 14 - Installation fails on OSX Yosemite

Hello,

after downloading unity 5.0 beta 14 with the installer the following message occurs on start of installation (on imac with yosemite):

Installation error
Installation failed with message
Installer: OS X not installed

Any idea?

Best regards

Okay, the error occurs by installation on a extern usb 3.0 ssd. On intern hdd the installation works fine.