MIKE HYDRO NAM Autocalibration

Hi all,

I am trying to calibrate MIKE HYDRO NAM for a single catchment under Rainfall Runoff module only. I set everything to calibrate the model but calibration tool is not working at all. In short, it only shows observed Q but produce no simulated Q. Not a single parameter is updated.  What could be the possible reason for this.

Thanks in advance and any assistance is appreciated.

Regards

When the same model is run in MIKE 11 using MIKE Classic engine, the model is calibrated quite well. However, again it did not run with MIKE 1D engine in MIKE 11. This is quite weird and challenging.

Can anybody explain what could be the possible reason?
Regards