Several nodes unavailable and uninstallable

[thor_landstrom]

Hey @mwiegand,

Thanks for the detailed write up on this issue, I see another team member has replied in the past, but I went ahead and created a ticket for it as it seems to still be occuring.

Ticket AP-22563

TL

[wiswedel]

This was brought to my attention. I think the root cause of the problem is in a community extension (KNIP). Can you (temporarily) uninstall it and double-check?

@mwiegand

java.lang.ExceptionInInitializerError
	at org.knime.knip.base.data.img.ImgPlusCellFactory.getDataType(ImgPlusCellFactory.java:116)

[mwiegand]

Both or just the first?

Update
After uninstalling the first and restarting Knime the issue still persists.

240528 Knime - 77549 - Debug Log Level Error Log.txt (42.0 KB)

Update 2
After removing the second extension and restarting Knime the issue seems resolved. I will reinstall the first and see if it reaappears.

[R72]

I had exactly the same problem in 2024. I also wrote here on the forum.
Now I have completely demolished Knime 5.2.3
and installed it in version 5.2.4 from scratch.
I have been watching for a week, there is no described problem.
All nodes are in place.
All 5 standard extensions are installed, including NodePit.

[mwiegand]

@R72 do you also have “KNIME Image Processing - ImageJ Integration (Beta)” from KNIME / LOCI installed?

[R72]

[mwiegand]

Thanks @R72

@wiswedel I suppose, since the issue was still present after deleting the first extension, that it wasn’t the cause, was it?

[mwiegand]

PS: Another Knimer reported a possible similar issue. Thought the error message slightly deviates because other nodes are impacted.

ERROR RepositoryManager Category ‘python-nodes’ from plugin ‘org.knime.python3.nodes.testing’ could not be created in parent path ‘/testing/’.
ERROR RepositoryFactory Locked parent category for category testing. Category will NOT be added!

Several nodes unavailable and uninstallable

Hi, since recently I face an issue where Knime complains about a missing extension. ERROR LoadWorkflowRunnable Status: Error: Node "Java Edit Variable" not available from extension "KNIME Javasnippet" (provided by "KNIME AG, Zurich, Switzerland"; plugin "org.knime.jsnippets" is installed) ERROR LoadWorkflowRunnable Status: Error: Node "Rule-based Row Filter" not available from extension "KNIME Javasnippet" (provided by "KNIME AG, Zurich, Switzerland"; pl…

[forum]

Internal ticket ID: AP-21672
Fix version(s): 5.2.6, 5.3.0
Other related topic(s):

[KNIME AP 5.2.3] Missing core nodes on startup

Occasionally I have this pop up when I start KNIME AP, saying 'Errors due to missing node extensions (…) Do you want to search and install the required extensions? [image] I have these nodes installed already, and I haven’t done anything to alter core nodes, so this is unexpected and odd. I cannot reliably reproduce it. What I can say for the most recent time is: I had KNIME AP 5.2.3 open with at least 1 workflow open. My computer did a routine shutdown (unattended). I started my computer (…