Internal Error: Sub-system: DSET, File: /quartus/saui/dset/dset_dual_purpose_page.cpp, Line: 1386 - Internal Error: Sub-system: DSET, File: /quartus/saui/dset/dset_dual_purpose_page.cpp, Line: 1386 Description Due to a problem in the Intel® Quartus® Prime Pro Edition Software v21.2, you might see the following internal error when changing the settings in Device > Device and Pin Options > Board Trace Model for designs targeting Intel Agilex® devices: Encountered error: Internal Error: Sub-system: DSET, File: /quartus/saui/dset/dset_dual_purpose_page.cpp, Line: 1386 Resolution To work around this problem in the Intel® Quartus® Prime Pro Edition Software version 21.2, follow these steps: Make one change in the Device and Pin Options (User can make any change that they want) Click OK Close the window and make next change. (User can make any change that they want) This problem is fixed beginning with the Intel® Quartus® Prime Pro Edition Software version 21.3. Custom Fields values: ['novalue'] Troubleshooting 18017862765 False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 21.3 21.2 ['Agilex™ 7 FPGAs and SoCs'] ['novalue'] ['novalue'] ['novalue']