General Description: When running m2.1i PAR, you may get following error message.
ERROR:Parsers:3 - Unable to parse "+" in line 4. ERROR:Par:51 - The .pcf file contains errors/warnings. PAR cannot proceed.
This error message is saying that it found an illegal character "+" in the .pcf file. This error may occur if you have used Synopsys FPGA Compiler to generate your netlist and if you have also used Floorplanner.
Synopsys FPGA Compiler may illegally write out .edif netlist with unusual net name such as: