Error: <your design path> alt_em10g32_0_gen/simulation/ed_sim/setup_scripts does not exist

Description

You may see this error message when you attempt to generate the Low Latency Ethernet 10G MAC IP core in the Quartus® II or Quartus Prime software.

Resolution

This problem can be resolved by setting the QSYS_ROOTDIR as a System Variable, and adding that variable to the System path statement. This is described in the Quartus Install Manual in the "Quartus Prime Environment Variables" section:

https://www.intel.com/content/dam/altera-www/global/en_US/pdfs/literature/manual/quartus_install.pdf

The following link includes some additional information on those variables and how to set them in Windows:

setting_up_environment_variables_for_gui.pdf