It would be helpful to know which data/variables are generating these errors:
Tao> der
[INFO] tao_dmodel_dvar_calc:
Remaking dModel_dVar derivative matrix.
This may take a while...
EIG6: Eigenvalues off the unit circle!
1.0115594527865908
EIG6: Eigenvalues off the unit circle!
0.98857264122755995
EIG6: Eigenvalues off the unit circle!
1.0115594527865908
EIG6: Eigenvalues off the unit circle!
0.98857264122755995
EIG6: Eigenvalues off the unit circle!
1.0050307552375335
EIG6: Eigenvalues off the unit circle!
0.99499442657715609
EIG6: Eigenvalues off the unit circle!
1.0050307552375335
EIG6: Eigenvalues off the unit circle!
0.99499442657715609
EIG6: Eigenvalues off the unit circle!
1.0016319175588086
EIG6: Eigenvalues off the unit circle!
0.99837074125707770
EIG6: Eigenvalues off the unit circle!
1.0016319175588086
EIG6: Eigenvalues off the unit circle!
0.99837074125707770
EIG6: Eigenvalues off the unit circle!
1.0022300469031089
EIG6: Eigenvalues off the unit circle!
0.99777491514045902
EIG6: Eigenvalues off the unit circle!
1.0022300469031089
EIG6: Eigenvalues off the unit circle!
0.99777491514045902
It would be helpful to know which data/variables are generating these errors: