I want to export a workflow. Therefore I right-click on a workflow in the work flow browser sub-window on the left-hand side, choose the "Export KNIME Workflow" and then get the following error message: "Export of workflows did not succeed: org.knime.core.util.KnimeFileUtil.isMetaNode(Ljava/io/File;)Z".
That is true for my all workflows in my KNIME installation.
At the moment I have no idea how to solve this problem. A restart does not change this behaviour.
Any ideas? Solutions?