#2 May 08, 2018 17:21
I think the auto method isn't recommended unless you have at least 5.0.6 looks like you were on 3.3.3 ??
This feature is considered future proof only starting at version 5.0.6 (it means you should have 5.0.6 installed before attempting to upgrade with this feature).
So yes, best do a new install.