*Error*outputs: digital terminal outputs not supported

[Erik Wanta]

I am trying to run a spectreVerilog simulation and am getting the
following. Why can't I have floating digital output terminals?

\o Delete psf data in ...
\o compose simulator input file...
\o *Error*outputs: digital terminal outputs not supported
\o *Error*outputs: digital terminal outputs not supported
\o *Error*outputs: digital terminal outputs not supported
\o *Error*outputs: digital terminal outputs not supported
\o *Error*outputs: digital terminal outputs not supported
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Erik