Internal Error, Sub System: Lchip : File: /quartus/legality/lchip/lchip_rowclock_router.cpp, line : 1944 - Internal Error, Sub System: Lchip : File: /quartus/legality/lchip/lchip_rowclock_router.cpp, line : 1944 Description Due to a problem in the Intel® Quartus® Prime Pro Edition software version 18.0 Update 1, you may see this error in the routing stage when your design has Partial Reconfiguration regions enabled. Resolution To work around this problem, for the Intel® Quartus® Prime Pro Edition software version 18.0 Update 1, download and install patch 1.33 from the links below. You must install the Intel® Quartus® Prime Pro Edition software version 18.0 Update 1 before installing this patch. Download the version 18.0 Update 1 patch 1.33 for Windows (.exe) Download the version 18.0 Update 1 patch 1.33 for Linux (.run) Download the Readme for the Intel Quartus Prime Pro edition software version 18.0 Update 1 patch 1.33 (.txt) This problem is fixed beginning with the Intel® Quartus® Prime Pro Edition software version 18.1 Custom Fields values: ['novalue'] Troubleshooting FB: 596908; False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 18.1 18.0.1 ['Stratix® 10 FPGAs and SoCs'] ['novalue'] ['novalue'] ['novalue']