Unfixable error - Can't elaborate inferred hierarchy "sld_hub:auto_hub"

[yusufbas]

After generating my Qsys Nios ii project, I get this "unfixable" error - no matter which project, which operating system, which Quartus version, this error seems unfixable as long as it includes any type of Nios ii in it! I have tried windows 7 and 10, even tried on Ubuntu but couldn't properly install, tried Quartus 15, 16 and 18.1, tried example projects from the design store specific for my board (DE10-Lite) this error and his friends don't seem fixable. I really need help. Here is the list of the error messages(not in order):

Error (12154): Can't elaborate inferred hierarchy "sld_hub:auto_hub"

Error (11176): Set_instance_parameter_value: There is no parameter named DESIGN_HASH on instance alt_sld_fab

Error (11176): Alt_sld_fab.: version not allowed for EModuleProperty, must be in {[DESCRIPTION, NAME, VERSION, MODULE_TCL_FILE, MODULE_DIRECTORY, INTERNAL, HIDE_FROM_SOPC, HIDE_FROM_QSYS, HIDE_FROM_QUARTUS, OPAQUE_ADDRESS_MAP, GROUP, AUTHOR, ICON_PATH, DISPLAY_NAME, DATASHEET_URL, TOP_LEVEL_HDL_FILE, TOP_LEVEL_HDL_MODULE, INSTANTIATE_IN_SYSTEM_MODULE, EDITABLE, VALIDATION_CALLBACK, EDITOR_CALLBACK, ELABORATION_CALLBACK, GENERATION_CALLBACK, COMPOSITION_CALLBACK, PARAMETER_UPGRADE_CALLBACK, OUTDATED_IP_FILE, ANALYZE_HDL, STATIC_TOP_LEVEL_MODULE_NAME, FIX_110_VIP_PATH, SUPPORTED_DEVICE_FAMILIES, REPORT_TO_TALKBACK, ALLOW_GREYBOX_GENERATION, SUPPRESS_WARNINGS, STRUCTURAL_COMPOSITION_CALLBACK, NATIVE_INTERPRETER, PREFERRED_SIMULATION_LANGUAGE, REPORT_HIERARCHY, UPGRADEABLE_FROM]}

[AnandRaj_S_Intel]

Hi Yusuf,

1. Delete all folders & files excluding .qpf, .qsys & .vhd/.v file.
2. Regenerated the qsys system.
3. Include Qysy .qip.
4. Instantiate it in my top-level or set qsys system has the top-level.
5. Compile the design.

If you are still facing problem share the project.

Regards

Anand