message: Changed sign on sigma
diff: @@ -455,7 +455,7 @@ void TACSFrequencyAnalysis::solve( KSMPrint *ksm_print ){
  if (mg){
  // Assemble the mass matrix
  ElementMatrixType matTypes[2] = {STIFFNESS_MATRIX, MASS_MATRIX};
  - TacsScalar scale[2] = {1.0, sigma};
  + TacsScalar scale[2] = {1.0, -sigma};
  // Assemble the mass matrix
  tacs->assembleMatType(MASS_MATRIX, mmat);
  