ADS Momentum ： Simple differential (sport problem)<-NO

Dear all,

I have a simple layout, with 2 conductors and 4 ports.

These 4 ports are differentials, the substrate definition is a FreeSpace layer, a Dielectric layer (let"s say Alumine), and another FreeSpace_0 layer with open boundary. So, no ground plane.

The substrate calculation worked fine, so the meshing.
Then after, the simulation too.
But when I want to up Create/Update the equivalent component, Momentum returns this error:
I thought it was a port problem, but I cannot explain the error.
And as I quit this project and restart , I have an "AEL error" message.

Do you have an idea where is the problem?
I previously tried deleting ATF file, with no more success.

Any help would be appreciated.
Thanks a lot !

Regards

Devil's in the Details...

NEVER use the "-" (minus) character in a file name.
Never EVER !

Hope this helps

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