1. ASSERT: make sure you have an account in your OpenShift Express Console that has at least 1 application 2. EXEC: in the OpenShift Express Console : select your application and pick Delete Application in the context menu Result: You get an error that reports an invalid thread access In the log you'll spot the following entry: org.eclipse.swt.SWTException: Invalid thread access at org.eclipse.swt.SWT.error(SWT.java:4282) at org.eclipse.swt.SWT.error(SWT.java:4197) at org.eclipse.swt.SWT.error(SWT.java:4168) at org.eclipse.swt.widgets.Widget.error(Widget.java:466) at org.eclipse.swt.widgets.Widget.checkWidget(Widget.java:404) at org.eclipse.swt.widgets.Tree.getSelection(Tree.java:1714) at org.eclipse.jface.viewers.TreeViewer.getSelection(TreeViewer.java:256) at org.eclipse.jface.viewers.TreeViewer.setSelection(TreeViewer.java:344) at org.eclipse.jface.viewers.AbstractTreeViewer.setSelectionToWidget(AbstractTreeViewer.java:2521) at org.eclipse.ui.navigator.CommonViewer.setSelectionToWidget(CommonViewer.java:446) at org.eclipse.jface.viewers.AbstractTreeViewer.setSelectionToWidget(AbstractTreeViewer.java:2944) at org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1450) at org.eclipse.jface.viewers.TreeViewer.preservingSelection(TreeViewer.java:403) at org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1404) at org.eclipse.jface.viewers.StructuredViewer.refresh(StructuredViewer.java:1533) at org.eclipse.jface.viewers.ColumnViewer.refresh(ColumnViewer.java:548) at org.eclipse.ui.navigator.CommonViewer.refresh(CommonViewer.java:353) at org.eclipse.ui.navigator.CommonViewer.refresh(CommonViewer.java:510) at org.eclipse.jface.viewers.StructuredViewer.refresh(StructuredViewer.java:1465) at org.jboss.tools.openshift.express.internal.ui.action.DeleteApplicationAction$1.run(DeleteApplicationAction.java:72) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)