Internal Error: Sub-system: VPR20KMAIN, File: /quartus/fitter/vpr20k/nf_arch/nf_net_rr_terminals.c, Line: 507

Description

Due to a problem in the Intel® Quartus® Prime Pro Edition software version 17.1 and earlier, you may see this internal error at Fitter stage for design targeting Intel Arria® 10 devices.

Resolution

This problem is fixed begining with the Intel Quartus Prime Pro Edition software version 17.1 Update 1