2018-03-28 17:41:26,779 : DEBUG : ModalContext : FileWorkflowPersistor : MathFormulaNodeExample : 0 : Unable to load node with ID suffix 4 into workflow, skipping it: Node “Math Formula (Multi Column)” not available from extension “KNIME Math Expression (JEP)” (provided by “KNIME AG, Zurich, Switzerland”; plugin “org.knime.ext.jep” is installed)
org.knime.core.node.workflow.WorkflowPersistor$NodeFactoryUnknownException: Node “Math Formula (Multi Column)” not available from extension “KNIME Math Expression (JEP)” (provided by “KNIME AG, Zurich, Switzerland”; plugin “org.knime.ext.jep” is installed)
at org.knime.core.node.workflow.FileNativeNodeContainerPersistor.preLoadNodeContainer(FileNativeNodeContainerPersistor.java:192)
at org.knime.core.node.workflow.FileWorkflowPersistor.loadNodeContainer(FileWorkflowPersistor.java:1028)
at org.knime.core.node.workflow.WorkflowManager.postLoad(WorkflowManager.java:7820)
at org.knime.core.node.workflow.WorkflowManager.loadContent(WorkflowManager.java:7710)
at org.knime.core.node.workflow.WorkflowManager.load(WorkflowManager.java:7662)
at org.knime.core.node.workflow.WorkflowManager.load(WorkflowManager.java:7585)
at org.knime.core.node.workflow.WorkflowManager.load(WorkflowManager.java:7558)
at org.knime.core.node.workflow.WorkflowManager.loadProject(WorkflowManager.java:7407)
at org.knime.workbench.editor2.LoadWorkflowRunnable.run(LoadWorkflowRunnable.java:163)
at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:119)
Caused by: java.lang.ClassNotFoundException: org.knime.ext.jep.multicolumn.MultiColumnJEPNodeFactory cannot be found by org.knime.core_3.4.3.v201802091246
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:461)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:372)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:364)
at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:161)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at org.knime.core.eclipseUtil.GlobalClassCreator.createClass(GlobalClassCreator.java:144)
at org.knime.core.node.workflow.FileNativeNodeContainerPersistor.loadNodeFactory(FileNativeNodeContainerPersistor.java:322)
at org.knime.core.node.workflow.FileNativeNodeContainerPersistor.preLoadNodeContainer(FileNativeNodeContainerPersistor.java:189)
… 9 more
2018-03-28 17:41:26,785 : DEBUG : ModalContext : JEPNodeFactory : MathFormulaNodeExample : 0 : Factory is already initialized. Nothing to do.
2018-03-28 17:41:26,786 : DEBUG : ModalContext : JEPNodeFactory : MathFormulaNodeExample : 0 : Factory is already initialized. Nothing to do.
2018-03-28 17:41:26,789 : DEBUG : ModalContext : WorkflowManager : : : Added new connection from node 0:1(1) to node 0:3(1)
2018-03-28 17:41:26,789 : DEBUG : ModalContext : WorkflowManager : : : Added new connection from node 0:5(1) to node 0:6(1)
2018-03-28 17:41:26,789 : DEBUG : ModalContext : WorkflowManager : : : Added new connection from node 0:1(1) to node 0:4(1)
2018-03-28 17:41:26,789 : DEBUG : ModalContext : WorkflowManager : : : Added new connection from node 0:3(1) to node 0:5(1)
2018-03-28 17:41:26,853 : DEBUG : ModalContext : Math Formula : Math Formula : 0:3 : Configure succeeded. (Math Formula)
2018-03-28 17:41:26,854 : WARN : ModalContext : MISSING Math Formula (Multi Column) : MISSING Math Formula (Multi Column) : 0:4 : Node can’t be executed - Node “Math Formula (Multi Column)” not available from extension “KNIME Math Expression (JEP)” (provided by “KNIME AG, Zurich, Switzerland”; plugin “org.knime.ext.jep” is installed)
2018-03-28 17:41:26,856 : DEBUG : ModalContext : Math Formula : Math Formula : 0:5 : Configure succeeded. (Math Formula)
2018-03-28 17:41:26,856 : DEBUG : ModalContext : Math Formula : Math Formula : 0:6 : Configure succeeded. (Math Formula)
2018-03-28 17:41:26,858 : DEBUG : ModalContext : WorkflowManager : : : Loaded workflow from “/home/manuel/knime-workspace/MathFormulaNodeExample” with errors
2018-03-28 17:41:26,859 : ERROR : ModalContext : LoadWorkflowRunnable : : : Errors during load: Status: Error: MathFormulaNodeExample 0 loaded with errors
2018-03-28 17:41:26,859 : ERROR : ModalContext : LoadWorkflowRunnable : : : Status: Error: MathFormulaNodeExample 0
2018-03-28 17:41:26,859 : ERROR : ModalContext : LoadWorkflowRunnable : : : Status: Error: Node “Math Formula (Multi Column)” not available from extension “KNIME Math Expression (JEP)” (provided by “KNIME AG, Zurich, Switzerland”; plugin “org.knime.ext.jep” is installed)
2018-03-28 17:41:28,525 : DEBUG : main : ProjectWorkflowMap : : : Adding “file:/home/manuel/knime-workspace/MathFormulaNodeExample/” to project map (1 in total)
2018-03-28 17:41:28,536 : DEBUG : main : ProjectWorkflowMap : : : registering org.knime.workbench.editor2.WorkflowEditor@336f70a6 to file:/home/manuel/knime-workspace/MathFormulaNodeExample/. 1 registered clients now.
2018-03-28 17:41:28,622 : DEBUG : main : WorkflowRootEditPart : : : part: NodeAnnotationEditPart( )
2018-03-28 17:41:28,647 : WARN : main : FontStore : : : Using the system default font for annotations: Font {139963660778784}
2018-03-28 17:41:28,653 : DEBUG : main : WorkflowRootEditPart : : : part: NodeAnnotationEditPart( )
2018-03-28 17:41:28,654 : DEBUG : main : WorkflowRootEditPart : : : part: NodeAnnotationEditPart( )
2018-03-28 17:41:28,654 : DEBUG : main : WorkflowRootEditPart : : : part: NodeAnnotationEditPart( )
2018-03-28 17:41:28,654 : DEBUG : main : WorkflowRootEditPart : : : part: NodeAnnotationEditPart( )
2018-03-28 17:41:28,658 : DEBUG : main : WorkflowRootEditPart : : : part: NodeContainerEditPart( Table Creator 0:1 (EXECUTED) )
2018-03-28 17:41:28,700 : DEBUG : main : ConnectionContainerEditPart : : : refreshing visuals for: STD[0:1(1) -> 0:3( 1)]
2018-03-28 17:41:28,700 : DEBUG : main : ConnectionContainerEditPart : : : modelling info: null
2018-03-28 17:41:28,703 : DEBUG : main : ConnectionContainerEditPart : : : refreshing visuals for: STD[0:1(1) -> 0:4( 1)]
2018-03-28 17:41:28,703 : DEBUG : main : ConnectionContainerEditPart : : : modelling info: null
2018-03-28 17:41:28,703 : DEBUG : main : WorkflowRootEditPart : : : part: NodeContainerEditPart( Math Formula 0:3 (CONFIGURED) )
2018-03-28 17:41:28,704 : DEBUG : main : ConnectionContainerEditPart : : : refreshing visuals for: STD[0:1(1) -> 0:3( 1)]
2018-03-28 17:41:28,704 : DEBUG : main : ConnectionContainerEditPart : : : modelling info: null
2018-03-28 17:41:28,705 : DEBUG : main : ConnectionContainerEditPart : : : refreshing visuals for: STD[0:3(1) -> 0:5( 1)]
2018-03-28 17:41:28,705 : DEBUG : main : ConnectionContainerEditPart : : : modelling info: null
2018-03-28 17:41:28,705 : DEBUG : main : WorkflowRootEditPart : : : part: NodeContainerEditPart( MISSING Math Formula (Multi Column) 0:4 (IDLE) )
2018-03-28 17:41:28,705 : DEBUG : main : ConnectionContainerEditPart : : : refreshing visuals for: STD[0:1(1) -> 0:4( 1)]
2018-03-28 17:41:28,705 : DEBUG : main : ConnectionContainerEditPart : : : modelling info: null
2018-03-28 17:41:28,706 : DEBUG : main : WorkflowRootEditPart : : : part: NodeContainerEditPart( Math Formula 0:5 (CONFIGURED) )
2018-03-28 17:41:28,706 : DEBUG : main : ConnectionContainerEditPart : : : refreshing visuals for: STD[0:3(1) -> 0:5( 1)]
2018-03-28 17:41:28,706 : DEBUG : main : ConnectionContainerEditPart : : : modelling info: null
2018-03-28 17:41:28,707 : DEBUG : main : ConnectionContainerEditPart : : : refreshing visuals for: STD[0:5(1) -> 0:6( 1)]
2018-03-28 17:41:28,707 : DEBUG : main : ConnectionContainerEditPart : : : modelling info: null
2018-03-28 17:41:28,707 : DEBUG : main : WorkflowRootEditPart : : : part: NodeContainerEditPart( Math Formula 0:6 (CONFIGURED) )
2018-03-28 17:41:28,708 : DEBUG : main : ConnectionContainerEditPart : : : refreshing visuals for: STD[0:5(1) -> 0:6( 1)]
2018-03-28 17:41:28,708 : DEBUG : main : ConnectionContainerEditPart : : : modelling info: null
2018-03-28 17:41:50,638 : DEBUG : main : NodeContainerEditPart : : : Math Formula 0:6 (CONFIGURED)
2018-03-28 17:41:50,638 : DEBUG : main : NodeContainerEditPart : : : MISSING Math Formula (Multi Column) 0:4 (IDLE)
2018-03-28 17:41:52,345 : DEBUG : Service Thread : MemoryAlertSystem : : : Memory usage below threshold of 0.86875 after GC run
Not sure how to attach and what to attach. Is this part the one you were looking for?