Error: set ALTERA_HW_TCL_KEEP_TEMP_FILES=1 - Error: set ALTERA_HW_TCL_KEEP_TEMP_FILES=1 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 avoid this problem, upgrade to Cygwin version 2.11.1 or later Custom Fields values: ['novalue'] Troubleshooting 00905061 False ['novalue'] ['FPGA Dev Tools Quartus II Software'] No plan to fix No plan to fix ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']