I've been trying to run CCSD(T) optimizations and found that the analytic gradients aren't available:
"PsiException: select_ccsd_t__gradient: Method 'ccsd(t)' with CC_TYPE 'CONV' and REFERENCE 'RHF' not available"
I am running these with a RHF reference (these are singlet systems). If I run these as UHF, then the analytic gradients are available. I'm wondering why this is happening.
I am running a (very recently updated) copy of the binary.