About S-parameter simulation with TLines-LineType components

Hi,

I wanted to create a coupled line channel for my Channel Sim simulation, but it runs into error and forced quit, so I decided to go back and investigate my channel model.

I created the default substrate

Then created a coupled line

Then insert it with TLines-LineType

Then run a S-parameter simulation with it

But here is what I get

I'm using ADS2017.1 on Windows 10. I think those discontinuities are reasons why my ChannelSim was corrupted. Did I miss something about TLines-LineType?

Thanks