Internal Error: Sub-system: VPR20KMAIN, File: /quartus/fitter/vpr20k/vpr_common/route_node_reservations.c, Line: 327 - Internal Error: Sub-system: VPR20KMAIN, File: /quartus/fitter/vpr20k/vpr_common/route_node_reservations.c, Line: 327 Description Due to a problem in the Quartus® II software version 12.0 and later, you may see this internal error during fitting. The problem occurs when you have set the allow multiple personas option on unsupported device families. Resolution To avoid this problem, do not set the allow multiple personas option when compiling for an unsupported device family. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['novalue'] novalue novalue ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']