As of 2012-09-27, we have an issue with upgrades from 7.x or 8.x to 9x and are in contact with the SimpleScripts team by email.
SimpleScripts 9.1 install was perfect.
SimpleScripts 7.1 install was perfect.
Upgrade to 7.2 was perfect, but there is no option to upgrade to Tiki8 or Tiki9.
SimpleScripts 8.1 install was perfect.
Upgrade to 8.3 was perfect, but there is no option to upgrade to Tiki9.
Also, we'll be finding a way to support LTS, as per
Message to 1-click installers about Tiki LTS
We'll also ask SimpleScripts to review
as they have a lot of experience with all kinds of hosts.