Quote Originally Posted by lat9 View Post
Nope, it's (again) my bad. The current implementation of the encapsulated version "assumes" (falsely, obviously) that the state's base tax-rate is baked into the local sales tax rates.

An update is forthcoming.

While you're at it, there is one additional "old version" file that could be deleted by the upgrader, the admin version of "local_sales_taxes.php". You currently have it as local_sales_tax.php on line 80 of the ScriptedInstaller.php.