Here are some common issues to check:

  • Ensure that both Rhino and Grasshopper are running and that you have the Hops plugin installed.
  • Look in the Rhino Compute server console for errors, and fix any that you find
    • To view the Rhino Compute server console:
      • Navigate to File > Preferences > Solver within Grasshopper.
      • Uncheck “Hide Rhino.Compute Console Window” then restart Rhino & Grasshopper for the change to take effect.
    • If you see “No frameworks were found” or ”… can not roll-forward to the previously referenced version …” in the console, then ASP.NET 7.0 is likely not installed.
  • Try restarting Rhino - sometimes the Rhino Compute server stops responding
  • Make sure you can open the Grasshopper file on your computer
  • Check that each output node has a value
  • Contact us for further support