Hi, @JohnHarmon,
Thank you for your interest into Model-Based Design Toolbox for S32K3.
We have recently released a new version of the toolbox (Model-Based Design Toolbox for S32K3 version 1.7.0). You may upgrade to this version and try reinstalling the toolbox using the Support Package installer. Please note that the toolbox can also be installed without using the Support Package utility—simply by dragging and dropping the .mltbx file. This method allows you to use the toolbox without encountering the verification issues experienced previously.
Hope this helps,
Dragos