Error: Failed to refresh PTF file *.ptf - Error: Failed to refresh PTF file *.ptf Description Due to a compatibility problem between legacy Quartus® II Software versions and current Cygwin versions, you might see this error when generating systems using SOPC Builder. Resolution To work around this problem, upgrade to Cygwin version 2.11.1 or later. Custom Fields values: ['novalue'] Troubleshooting 00905120 False ['novalue'] ['FPGA Dev Tools Quartus II Software'] No plan to fix No plan to fix ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']