# ** Error: (vlog-7) Failed to open design unit file "<quartus_installation_path>/eda/sim_lib/mentor/tennm_hssi_atoms_ncrypt.sv" in read mode. - # ** Error: (vlog-7) Failed to open design unit file "<quartus_installation_path>/eda/sim_lib/mentor/tennm_hssi_atoms_ncrypt.sv" in read mode. Description Starting from the Quartus® Prime Pro Edition Software version 21.3, common simulation libraries source files were reallocated from mentor folder (<quartus installation path>/eda/sim_lib/mentor) to the <quartus_installation_path>/eda/sim_lib/ folder. Trying to compile simulation library files using scripts that were generated by the Quartus® Prime Pro Edition Software version 21.2 and older will result in this error. Resolution To work around this problem, use one of the following steps: If you are using scripts that were generated by an external software, use this example script to compile the simulation library files : quartus_sh --simlib_comp -family <device family> -tool <simulation tool name> -tool_path <simulator_installation_path> -language <language> -log <log filename> For example: quartus_sh --simlib_comp -family all -tool modelsim -tool_path C:\intelFPGA\18.1\modelsim_ase\win32aloem -language verilog -log log.txt Command help : quartus_sh --help=simlib_comp As an alternative workaround: If you are using scripts generated by the Quartus® Prime Pro Edition Software version 21.2 or older, re-generat e the s imulation scripts with the Quartus® Prime Pro Edition Software version 21.3 or newer. Custom Fields values: ['novalue'] Troubleshooting 14016465212 False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] No plan to fix No plan to fix ['Programmable Logic Devices'] ['Simulation Development Tools'] ['novalue'] ['novalue']