You enabled or disabled the following Design Assistant rules: but at least one of the rules contains an illegal value - You enabled or disabled the following Design Assistant rules: but at least one of the rules contains an illegal value Description Due to a change in the Quartus II software version 13.0, you may see this error if your Quartus II Settings File ( .qsf ) enabled Design Assitant checking for rules M101, M102, M103, M104, or M105. Starting with the Quartus II software version 13.0, Design Assistant only runs post-synthesis or post-fitting. Rules M101, M102, M103, M104, and M105 for state machine checking were only used when running Design Assistant post-elaboration and are no longer supported. Resolution To avoid this error, remove any assignments for Design Assistant rules M101, M102, M103, M104, or M105 from your .qsf . Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['FPGA Dev Tools Quartus II Software'] novalue 13.0 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']