Hello Jerry,
I just had the same problem.
In NXP_Support_Package_S32K3xx.m, replace these lines :
result(i) = contains(toolboxes(i).Name, 'NXP_MBDToolbox_S32K3xx');
with: if isempty(toolboxes(i).Name)
else
result(i) = contains(toolboxes(i).Name, 'NXP_MBDToolbox_S32K3xx');
end
In my case, it seems like the toolboxes variable had an empty member, which caused the error.

You need to do this replacement three times in the .m.
Hope this helps,
Alex