Why do I get a fatal error when simulating Arria 10 LVDS SERDES IP in ModelSim SE version 10.3d? - Why do I get a fatal error when simulating Arria 10 LVDS SERDES IP in ModelSim SE version 10.3d? Description Due to a problem in Modelsim SE version 10.3d, you may see the following error when simulating the Arria® 10 LVDS SERDES IP. # ** Fatal: Error occurred in protected context. # Time: 0 ns Iteration: 0 Protected: /<hierarchical path to PLL>/<protected>/<protected>/<protected> File: nofile # FATAL ERROR while loading design # Error loading design # ** Fatal: Error occurred in protected context. # Time: 0 ps Iteration: 0 Protected: /lvds_tb/i_lvds_rx/i_lvds_pll_ip/iopll_0/altera_pll_i/<protected>/<protected>/<protected>/<protected> File: nofile # FATAL ERROR while loading design Resolution This is fixed in version 10.4 of Modelsim SE. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['novalue'] novalue novalue ['Arria® 10 GT FPGA', 'Arria® 10 GX FPGA', 'Arria® 10 SX FPGA'] ['novalue'] ['novalue'] ['novalue']