Test Case:
EXECUTE:
1. Import jboss-seam-jpa project.
2. Open pages.xml file
3. Change view-id="/confirm.xhtml" to view-id="/coirm.xhtml"
4. Save file
5. Change view-id="/coirm.xhtml" to view-id="/confirm.xhtml"
6. Save file
FAIL:
Exception:

org.eclipse.core.runtime.AssertionFailedException: null argument:The dialog should be created in UI thread
at org.eclipse.core.runtime.Assert.isNotNull(Assert.java:85)
at org.eclipse.jface.dialogs.IconAndMessageDialog.getSWTImage(IconAndMessageDialog.java:282)
at org.eclipse.jface.dialogs.IconAndMessageDialog.getErrorImage(IconAndMessageDialog.java:233)
at org.eclipse.jface.dialogs.MessageDialog.<init>(MessageDialog.java:179)
at org.jboss.tools.common.model.ui.wizards.one.ServiceDialogImpl.showDialog(ServiceDialogImpl.java:62)
at org.jboss.tools.common.model.impl.RegularObjectImpl.elementExists(RegularObjectImpl.java:151)
at org.jboss.tools.common.model.impl.RegularObjectImpl.set(RegularObjectImpl.java:134)
at org.jboss.tools.seam.pages.xml.model.impl.ReferenceObjectImpl.set(ReferenceObjectImpl.java:98)
at org.jboss.tools.common.meta.impl.adapters.XAdapterModelElement.setProperty(XAdapterModelElement.java:26)
at org.jboss.tools.common.model.impl.XModelObjectImpl.set_0(XModelObjectImpl.java:162)
at org.jboss.tools.common.model.impl.XModelObjectImpl.setAttributeValue(XModelObjectImpl.java:188)
at org.jboss.tools.seam.pages.xml.model.helpers.SeamPagesDiagramHelper.updateDiagram0(SeamPagesDiagramHelper.java:96)
at org.jboss.tools.seam.pages.xml.model.helpers.SeamPagesDiagramHelper.updateDiagram(SeamPagesDiagramHelper.java:68)
at org.jboss.tools.seam.pages.xml.model.FileSeamPagesImpl.mergeAll(FileSeamPagesImpl.java:47)
at org.jboss.tools.common.model.filesystems.impl.AbstractExtendedXMLFileImpl.edit(AbstractExtendedXMLFileImpl.java:261)
at org.jboss.tools.jst.web.model.AbstractWebDiagramLoader.update(AbstractWebDiagramLoader.java:57)
at org.jboss.tools.common.model.filesystems.impl.FolderImpl.reload(FolderImpl.java:686)
at org.jboss.tools.common.model.filesystems.impl.FolderImpl.updateLoaded(FolderImpl.java:597)
at org.jboss.tools.common.model.filesystems.impl.FolderImpl.updateAuxiliary(FolderImpl.java:557)
at org.jboss.tools.common.model.filesystems.impl.FolderImpl.update(FolderImpl.java:381)
at org.jboss.tools.common.model.filesystems.impl.FolderImpl.updateLoaded(FolderImpl.java:582)
at org.jboss.tools.common.model.filesystems.impl.FolderImpl.update(FolderImpl.java:405)
at org.jboss.tools.common.model.filesystems.impl.FileSystemFolderLoader.update(FileSystemFolderLoader.java:28)
at org.jboss.tools.common.model.filesystems.impl.FileSystemsLoader.update(FileSystemsLoader.java:68)
at org.jboss.tools.common.model.filesystems.impl.FileSystemsImpl.doUpdate(FileSystemsImpl.java:343)
at org.jboss.tools.common.model.filesystems.impl.FileSystemsImpl.access$4(FileSystemsImpl.java:337)
at org.jboss.tools.common.model.filesystems.impl.FileSystemsImpl$UpdateRunnable.run(FileSystemsImpl.java:326)
at org.jboss.tools.common.model.XJob.runInWorkspace(XJob.java:178)
at org.eclipse.core.internal.resources.InternalWorkspaceJob.run(InternalWorkspaceJob.java:38)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)