I am encountering an issue during the Calibre PEX run:
Error while compiling rules file <calibre.rcx>:
Error PEX14 on line number of <calibre.rcx> - Layer appears in multiple layer sets (pex alias)
I couldn't even find the definition of "PEX14" in the Parasitic Extraction Errors list.
I just moved the the rules file from 9LM (Calibre PEX was able to complete the run!!) to 7LM and this compilation issue pops up.