Differences

This shows you the differences between two versions of the page.

--- rhino:200 [2025/09/02]
maryfugier [Rhino 8 won't start with this error]
+++ rhino:200 [2025/11/13] (current)
maryfugier [Rhino 8 won't start with this error]
@@ Line 5: / Line 5: @@
   - Do all the Windows updates
-  - Reinstall active MS .NET Runtime 8.0.19: https://dotnet.microsoft.com/en-us/download/dotnet/8.0
+  - Reinstall active MS .NET Runtime 8.0.22 or later: https://dotnet.microsoft.com/en-us/download/dotnet/8.0
   - Start Rhino and test
 ===== Rhino 8 STILL won't start with this same error =====
+In order for us to diagnose the issue, please follow these steps using Rhino 8.26 or later:
+  - Right click on **Windows Start > Run**
+  - Paste ''C:\Program Files\Rhino 8\System\Rhino.exe /debuglog'' and click "Ok".
+  - Exit Rhino
+  - Navigate to your Documents folder, and send us both the ''RhinoDebugMessages.txt'' and ''RhinoDotNetTraceLog.txt'' files.
+  - Zip and email to //tech@mcneel.com// with a description of your problem. Or submit the Zip using our [[https://www.rhino3d.com/upload|upload tool]].
+===== If all else fails =====
 If Rhino will //still// not open without this error, modify the Rhino shortcut with the /netfx switch.

McNeel Wiki