Something strange happens when I try to set up a python 3 script on Grasshopper (Rhino 8). It shows me the following message “Cannot edit in read-only editor” and it is impossible to do anything, neither delete the existing lines, nor write new ones. The IronPython component, on the other hand, works fine.
Then to get a good detailed report, please try this:
Close Rhino → delete %HOMEPATH%\.rhinocode → restart Rhino → run ScriptEditor and let it initialize languages → run RhinoCodeLogs and save/post the output. Note the log contains user file paths, so DM is fine if they’d rather not post publicly. Also worth getting SystemInfo, since a third-party plugin conflict is the other common cause.