Knime Excel Support broken after upgrade to 3.7.1

I upgraded from 3.6.2 to 3.7.1 and now KNIME Excel support is broken. Excel nodes are not visible and when loading an existing workflow wiht excel nodes it says they are missing and if it should look for a plugin. It finds it but then there is an error saying it is already installed.

Cannot complete the request. See the error log for details.
“KNIME Excel Support” will be ignored because it is already installed.

Also when using “Install KNIME extensions…” it’s not visible even with “Hide Installed” unchecked.

Console Messages:

ERROR LoadWorkflowRunnable Status: Error: Node “Excel Reader (XLS)” not available from extension “KNIME Excel Support” (provided by “KNIME AG, Zurich, Switzerland”; plugin “org.knime.ext.poi2” is not installed)
ERROR LoadWorkflowRunnable Status: Error: Node “Read Excel Sheet Names (XLS)” not available from extension “KNIME Excel Support” (provided by “KNIME AG, Zurich, Switzerland”; plugin “org.knime.ext.poi2” is not installed)
ERROR LoadWorkflowRunnable Status: Error: Node “Excel Writer (XLS)” not available from extension “KNIME Excel Support” (provided by “KNIME AG, Zurich, Switzerland”; plugin “org.knime.ext.poi2” is not installed)

And from log file:

Unable to load node with ID suffix 1 into workflow, skipping it: Node “Excel Reader (XLS)” not available from extension “KNIME Excel Support” (provided by “KNIME AG, Zurich, Switzerland”; plugin “org.knime.ext.poi2” is not installed)
org.knime.core.node.workflow.WorkflowPersistor$NodeFactoryUnknownException: Node “Excel Reader (XLS)” not available from extension “KNIME Excel Support” (provided by “KNIME AG, Zurich, Switzerland”; plugin “org.knime.ext.poi2” is not installed)
at org.knime.core.node.workflow.FileNativeNodeContainerPersistor.preLoadNodeContainer(FileNativeNodeContainerPersistor.java:193)
at org.knime.core.node.workflow.FileWorkflowPersistor.loadNodeContainer(FileWorkflowPersistor.java:943)
at org.knime.core.node.workflow.WorkflowManager.postLoad(WorkflowManager.java:7817)
at org.knime.core.node.workflow.WorkflowManager.loadContent(WorkflowManager.java:7708)
at org.knime.core.node.workflow.WorkflowManager.load(WorkflowManager.java:7662)
at org.knime.core.node.workflow.WorkflowManager.load(WorkflowManager.java:7583)
at org.knime.core.node.workflow.WorkflowManager.load(WorkflowManager.java:7556)
at org.knime.core.node.workflow.WorkflowManager.loadProject(WorkflowManager.java:7401)
at org.knime.workbench.editor2.LoadWorkflowRunnable.run(LoadWorkflowRunnable.java:175)
at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:119)
Caused by: java.lang.ClassNotFoundException: org.knime.ext.poi2.node.read3.XLSReaderNodeFactory cannot be found by org.knime.core_3.7.1.v201901281550
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:484)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:395)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:387)
at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:150)
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:328)
at org.knime.core.node.workflow.FileNativeNodeContainerPersistor.preLoadNodeContainer(FileNativeNodeContainerPersistor.java:190)
… 9 more

Hi there!

Can you try downloading and installing a fresh KNIME installation version 3.7.1?

Br,
Ivan

Yeah I guess won’t get around that…

Hi!

Still the same?

Br,
Ivan

Works fine after new install

Glad it works now :slight_smile:
Br,
Ivan