In order to do post-layout simulation and layout versus schematic comparison (LVS), you need to do a layout extraction first as an intermediate step.

Left click Editing: Verify -> Extract...

The Extractor dialog box should appear. >. You need to be sure to accurately locate the divaEXT.rul path. This should be somewhere in the techfile folder of the NCSU toolkit. Also be sure the Switch Names is set to blank. Left click OK.

If there are no errors, the CIW window will display "Total errors found: 0" (this may take a few seconds). Now you should be able to see another cell view of the inv named extracted in your Library Manager