@User I pushed files with that via issue fixed. Sorry it took so long: didn't have access to my workstation over Thanksgiving.

When you added the antenna cell in the lib file, you corrupted the file due to extra new line. I have to check if I still need the antenna in the liberty file, as I have changed the diode insertion strategy.

Re: lib files. There was someone at OSU running MMMC characterization. I think he's about done, and he should have the antenna diode cell in there. I'll just put in his lib files once he gets back to me. Re: minimum P-tap / N-tap, I think I know how and why, and it might be fixable with a short tcl script like the power-rail vias were. Will give it a look ASAP.