I have just upgraded KNIME analytic platform to version 4.2.1, my server version is 4.11 (Server small)!
Somehow I got error as below.
Do you have any suggestion of what went wrong?
Thanks for your support. We will looking at your suggestion. By the way, our KNIME server is Version: 4.11.0.0010-ef981c77d. We have just installed it this week.
on default the server is not allowing to execute workflows which were created with a future version of KNIME. This can be allowed from the Server Admin, by enabling the following setting to be false: com.knime.server.executor.reject_future_workflows=<true|false>
We are not recommending our .0 releases for production purposes. So in any case as @Mark_Ortmann already mentioned updating the KNIME Server to 4.11.1 will solve this problem and bring you the most recent bug fixed.