CCL:G: error in frequency calculation

 Sent to CCL by: "zjwu" [zjwu(-)]
 Dear All,
 Recently, I have calculated the electronic properties of molecules containing
 transition metal (also radioactive) Tc. However, during my calculation, I have
 found that the geometry optimization was finished perfectly, but the frequency
 calculation teminated with an error message. Here in the following, I attached
 an error message from a calculation of diatomic molecule TcC:
 Defaulting to unpruned grid for atomic number  43.
  Full mass-weighted force constant matrix:
  Low frequencies ---     -NaNQ     -NaNQ     -NaNQ     -NaNQ     -NaNQ     -NaNQ
  Molecule is linear but NTrRo=3.
  Error termination via Lnk1e in /opt/g03/g03/l716.exe
 Does anybody know how to solve the problem?
 Thank you very much.
 Zhijian WU