wszs

> We should use a more informative/tailored error message. > > But the reason it can't drop a wfn file is because non-Hartree--Fock Hessians are computed by finite difference, so...

> I'm not seeing any change in in 6 years -- https://github.com/psi4/psi4/blame/master/psi4/src/psi4/libscf_solver/hf.cc#L772-L801 . I also did a fresh clone and compile of master earlier today, and it was fine, so...