Cannot install MySQLi extension on DW CC 2015
I have updated DW recently. It was a fresh install as was having a Xmas update etc. I have tried to re-install MySQLi however I am getting errors and it cannot install. Weirdly the error is "This extension cannot be installed, it requires Dreamweaver 9 or greater" which is obviously the case.
Any ideas? I have some screenshots so you can see what I see. I've attached the version number as well.