86b38df binary throws divie by zero error, 846665e binary does not

[kallejahn]

The 86b38df binary seems to work just fine with the examples, but when I use it on my larger model of Long Island, it returns a divide by zero error:

Tested back to back against the 846665e binary from 2021, which works correctly.

I'll be sharing all the files with you @aprovost-usgs @wpbonelli.