I put my question here (though it would belong to the R community extension forum), as I do not know how to troubleshoot the issue.
since KNIME 4.2 we cannot load a workflow anymore which contains R-nodes (Community extension) from 2015.
KNIME asks to search for the nodes which seems to be successful. Installation works but after restarting KNIME the nodes are still not available. Though the software now claims to have the extension installed.
I will attach the log-file as well as the workflow.
I would be very happy if anybody can explain to me what is going wrong there and why it did not happen before KNIME 4.2 and how this can be fixed (if at all) It’s one of our course workflows which is given regularly, so I am sure, that it worked at least until end of 2019.