Parameters Sweep in ADE-XL results in "netl err"

I'm trying to use ADE-XL to sweep "length" for a resistor pcell.  I clicked "Parameters" in the "Data View" pane and I select a parameter to sweep in the schematic 

ADE-XL works correctly if:

1. I don't set any Parameters
2. Set a single value in the Parameters

ADE-XL results in "netl err" if:

1. I set any type of specification for the parameter.
2. The specific error in the log is: 

*Error* eval: unbound variable - ATS_CB_VALUES
\o ERROR (ADE-6029): Netlisting failed because of errors in callback 'ats130resCB('l)' associated with param 'l'
\o of the lib 'temp' cell 'temp3' view 'schematic' inst 'R0'.
\o To complete netlisting, ensure that all the errors are corrected.
\o End netlisting Jan 10 00:32:26 2018
\o ERROR (OSSHNL-514): Netlist generation failed because of the errors reported above. The netlist might not have been generated at all, or the generated netlist could be corrupt. Fix the reported errors and regenerate the netlist.
\o ...unsuccessful.
\e *Error* Error during netlisting of design for the point ID (16 1).
\e ("error" 3 t nil ("*Error* "))
\e
\e
\o
\o *Error* Error ID = 5012
\o *Error* Error Msg = Failed to create netlist.

Is there a way to get around this?