openBIS KNIME nodes

Hi,

we want to use the KNIME nodes you provide for interacting with our openBIS instances. However, we followed the documentation (openBIS KNIME Nodes - openBIS Documentation Rel. 20.10 - Confluence) and we couldn’t make it work. Despite using our credentials, when clicking on the buttons next to “Data Set Code” or “File”, nothing happens and when I paste the Dataset identifier, I get error messages.

ERROR openBIS Data Set File Importer 0:33       Configure failed (NoClassDefFoundError): javax/activation/MimetypesFileTypeMap
ERROR openBIS Data Set File Importer 0:33       org.springframework.remoting.RemoteAccessException: Could not access HTTP invoker remote service at [https://openbis3.zl2030.de/openbis/openbis/rmi-general-information-v1]; nested exception is java.io.InvalidObjectException: enum constant DATE does not exist in class ch.systemsx.cisd.openbis.generic.shared.basic.dto.DataTypeCode

We use version 13.6.2 on KNIME 4.5.
Do you have a KNIME workflow that uses these nodes that we can try out?