ADS transistor model help?

Hi,
I installed Freescale's RF High Power Model Kit 2006 Rev 2 (for ADS 2006U3) and can pick and place models to the schematic. However when I try to simulate (basic s-parameter), I receive the following error messages within the simulator window:
Warning detected by HPEESOFSIM during netlist flattening.
FSL_MET_MODEL.X1 is an instance of an undefined model FSLRFPK_METMOS_v1.
(FSL_TECH_INCLUDE element is also placed on schematic and I didn't do any changes on it.)

Do you have any suggestion to overcome this error?

Close all your design works and ADS then restart ADS again with a new design. Sometimes, this might help. Good luck!

quangt thanks for the reply but that didn't help. Any more suggestions?

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