Subject: Optimization in transition state

From: Arvydas Tamulis <tamulis$at$mserv.itpa.lt>
Date: Tue, 26 Oct 2004 18:19:23 +0300 (EEST)

Dear Colleagues,

Would you please to help me because received unexpected stop during 
optimization in transition state of biological derivatives applying Gaussian03.
The input line is follows:

#P B3LYP 6-31G Opt=(TS,ModRedundant) IOp(6/3=12) DIIS SCFCYC=120

The optimization started, but after one cycle stopped:

Optimization stopped.
     -- Wrong number of Negative eigenvalues: Desired=  1 Actual=  0
     -- Flag reset to prevent archiving.

My question is: what does it means these comments in G03 and how to avoid 
this stopping?

Best regards, Arvydas Tamulis