For all you guys having problems with the Nest Plus update of 1.7.1.0....
For ZT (97.7) - the upgrade version of Nest Plus is 1.7.1.0 To make sure that your computer has the latest version of Nest Plus, you have to download
this package and replace it in C:\Program Files\Omnesys\NEST3
Please note that ZT could be installed anywhere in your computer and you have to replace the files in that folder.