Kodi 17.0 Crashes

Windows 7 (64 bit)-> upgrade Kodi 16.0 to 17.0
Hi I have installed 17.0 over existing 16.0 and it crashed when I start Kodi 17.0
Then i uninstalled Kodi including the profile installed a fresh new 17.0 everything is ok
But I want to keep my existing 16.0 Profile and Upgrade to 17.0 without problems.
Help whats the problem here? Never had this before with all the former upgrades
Is this because of 17.0 is still RC and not finished yet?