Internal Error: Sub-system: VPR20KMAIN, File: /quartus/fitter/vpr20k/altera_arch_common/altera_arch_place_delay.c, Line: 5163 - Internal Error: Sub-system: VPR20KMAIN, File: /quartus/fitter/vpr20k/altera_arch_common/altera_arch_place_delay.c, Line: 5163 Description In Quartus® Prime software version 15.1.2 and earlier, you may observe this internal error during design compilation after creating design partitions with “Allow Multiple Personas”. Configuration via Protocol (CvP) Update modes are not supported in Arria® 10 devices. Resolution Do not enable “Allow Multiple Personas” or create CvP Design Revisions if you are using Arria 10 devices in Quartus Prime software. Use Quartus Prime Pro version 16.0 and later with CvP Init mode with PR over PCIe as decribed in Chapter 7 of Arria 10 CvP Initialization and Partial Reconfiguration via Protocol User Guide (PDF) Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 16.0 15.1 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']