Internal Error: Sub-system: DMIG, File: /quartus/ddb/dmig/dmig_utility.cpp, Line: 128 - Internal Error: Sub-system: DMIG, File: /quartus/ddb/dmig/dmig_utility.cpp, Line: 128 Description Due to a problem in the Intel® Quartus® Prime Pro Edition Software v21.3, you may see this internal error when opening "Assignments" -> "Settings..." or "Assignments" -> "Assignment Editor". The internal error occurs when the project includes the following assignment: set_global_assignment -name DEVICE_MIGRATION_LIST <list of devices> Resolution To work around this problem, remove the following DEVICE_MIGRATION_LIST assignment from the QSF file: set_global_assignment -name DEVICE_MIGRATION_LIST <list of devices> This problem is scheduled to be resolved in a future release of the Intel® Quartus® Prime Pro Edition Software. Custom Fields values: ['novalue'] Troubleshooting 18018581985 False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 22.1 21.3 ['Agilex™ 7 FPGAs and SoCs', 'Arria® 10 FPGAs and SoCs', 'Cyclone® 10 FPGAs', 'Stratix® 10 FPGAs and SoCs'] ['novalue'] ['novalue'] ['novalue']