ATTEMPT TO GO DOWNHILL IS UNSUCCESSFUL...
A quite rare message, produced by the NLLSQ gradient norm minimization protocol. NLLSQ attempts to minimize the gradient norm by searching the gradient space for a minimum. Apparently a minimum has been found, but not recognized as such. The program has searched in all (3N-6) directions, and found no way down, but the criteria for a minimum have not been satisfied. A different gradient minimization technique is recommended.