Viewer extensions and metanodes

Hello!

I have a problem with older workflows that were written in 4.x and now no longer run in 5.x. Several viewers from the KNIME View Extensions, which are included in Metanodes, no longer run and can no longer be configured (even after a reset). The error message is :

ERROR : KNIME-Worker-64-Bar Chart 5:17:16 : : LocalNodeExecutionJob : Bar Chart : 5:17:16 : Caught “IllegalArgumentException”: No such node ID: 5:17 valid [5:17:14, 5:17:15, 5:17:16]

java.lang.IllegalArgumentException: No such node ID: 5:17 valid [5:17:14, 5:17:15, 5:17:16]

(note 17 being the metanode)

However, it seems to be independent of the upgrade, because I can reproduce it in a very simple workflow in 5.2.3.

For example, I attach Bar Chart and Histogram from the Viewer Extension to the Reader and everything works. I copy the two nodes, link them to the data and it still works. As soon as I combine the two nodes into a metanode, it no longer works. Do I now have to remove all these viewers from the metanodes?

I still works fine with other views from other extensions.