strange arduino oak boards install error message

[bpr]

I installed a fresh arduino 1.6.7 ide on a fresh windows 10 computer and this message was displayed in arduino IDE immediately upon trying to install the Oak boards json:

"Warning: non trusted contribution, skipping script execution (C:\Users\BrianMSI\AppData\Local\Arduino15\packages\digistump\tools\micronucleus\2.0a4\post_install.bat)"

Looking at post_install.bat I see it reads:  "%~dp0\install.exe"

What's this and the error message about?

[digistump]

This looks like you installed the Digistump AVR boards (or have them installed somewhere the IDE is seeing them?) - that batch file runs the USB driver isntaller when you install the Digispark package, but it isn't part of the Oak packages at all