I have the same problem as described in Linked components couldn't update . I have many components and in one of them I get this error.
The component had many updates over time and initially it could be updated automatically until something unknown happened and the error occurred. I even expanded the component, recreated it, and shared it again, but still the error is still there.
I looked in the knime.log and noticed error messages, which I thought might trigger this component-update-error. I cannot share the workflow so I tried to make a simple workflow with those nodes mentioned in the errors hoping it could be reproduced. When I update this simple component I have these errors in the knime.log too, but now the update succeeds!?
So something goes wrong, but it is not shown in the knime.log!? Is there another place (log-file?) were to look what is done during an component-update? Is there a possibility to get closer to the real cause?