I see this item was closed but I don't see any comment or input about the solution.
This ticket will stay forever (even closed).
If the issue was solved (even by itself) it is better to indicate it.
> On 14 Jun 2018, at 04:30 , noreply at tiki.org wrote:
> Database errors when upgrading from Tiki 12.9 to Tiki 15.5 <https://dev.tiki.org/tiki-view_tracker_item.php?itemId=6544>