Internal Error: Sub-system: NPP, File: /quartus/nlv/npp/npp_sgate_reconstructor.cpp, Line: 953 - Internal Error: Sub-system: NPP, File: /quartus/nlv/npp/npp_sgate_reconstructor.cpp, Line: 953 Description Due to a problem in the Intel® Quartus® Prime Pro Edition Software v21.2, you might see this internal error when opening the register transfer level (RTL) viewer for designs targeting Intel Agilex® devices with imported partitions. Resolution To work around this problem, remove the "qdb" folder prior to compiling your design. This problem is scheduled to be resolved in a future release of the Intel® Quartus® Prime Pro Edition Software. Custom Fields values: ['novalue'] Troubleshooting 18017542929 False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 22.1 21.2 ['Agilex™ 7 FPGAs and SoCs'] ['novalue'] ['novalue'] ['novalue']