Problem with Python Script component in KNIME 5.9.0 on MacOS Tahoe 26.2 (M4 Max)

KNIME Extensions
1

Hi,

I have a problem when attempting to run a Python Script node (that was working well one year ago with another version of KNIME, but I don’t remember which one).

The concrete error is this:

Node can’t be executed - Node “Python Script” not available from extension “KNIME Python Integration” (provided by “KNIME AG, Zurich, Switzerland”; plugin “org.knime.python3.scripting.nodes” is not installed)

It appears at the node itself in the GUI, as a Node warning, but it prevents the workflow to be executed:

Captura de pantalla 2026-02-10 a las 15.00.12
Captura de pantalla 2026-02-10 a las 15.00.121010×608 58 KB

I have checked:

  • That the Python Integration extension is correctly installed.
  • That the configuration is ok (I have tried with the Bundled option and with the conda based option and fails equally with both).

I have found some similar problem time ago that was fixed:

There is a log entry that may be related to it and mentions some problem with an iframe (I guess this is related to some bundled browser inside KNIME):

2026-02-10 14:06:31,951 : WARN : main : : KnimeBrowserView : : : An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing. (source: https://org.knime.core.ui.dialog/uiext-dialog/org.knime.python3.scripting.nodes2.script.PythonScriptNodeFactory/index.html; line: 0)
…

Any help would be greatly appreciated.

Best regards,

Miguel-Angel

2

Hi @MiguelAngelSici

Can you provide a little bit more information? What version of the “KNIME Python Integration” are you using?

I noticed that in the screenshot, you have an unconnected port in the python script error. Maybe you can remove it? That should lead to a different error, but maybe something did not get properly updated, and that hides the actual error.

Can you create a new python script node?

Best regards,
Marc

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