Enabling REST for procedures in a model works, but disabling REST for procedures causes the model to become corrupted. The following exceptions were found in the log after disabling and saving:

!ENTRY org.teiid.designer.ui 1 0 2011-12-06 14:24:39.960
!MESSAGE The model resource for "CustomerListFile_Proc.xmi" could not be found in the workspace. If that model was being created at the time (like via an importer) this could happen and is not a problem.
!STACK 0
java.lang.IllegalArgumentException: modelResource is null
at com.metamatrix.core.util.CoreArgCheck.isNotNull(CoreArgCheck.java:139)
at org.teiid.designer.core.extension.ModelObjectExtensionAssistant.getModelResource(ModelObjectExtensionAssistant.java:70)
at org.teiid.designer.core.extension.ModelObjectExtensionAssistant.hasExtensionProperties(ModelObjectExtensionAssistant.java:229)
at com.metamatrix.modeler.internal.ui.explorer.ModelExplorerLabelProvider.decorate(ModelExplorerLabelProvider.java:355)
at org.eclipse.ui.internal.decorators.LightweightDecoratorDefinition.decorate(LightweightDecoratorDefinition.java:263)
at org.eclipse.ui.internal.decorators.LightweightDecoratorManager$LightweightRunnable.run(LightweightDecoratorManager.java:81)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.ui.internal.decorators.LightweightDecoratorManager.decorate(LightweightDecoratorManager.java:365)
at org.eclipse.ui.internal.decorators.LightweightDecoratorManager.getDecorations(LightweightDecoratorManager.java:347)
at org.eclipse.ui.internal.decorators.DecorationScheduler$1.ensureResultCached(DecorationScheduler.java:371)
at org.eclipse.ui.internal.decorators.DecorationScheduler$1.run(DecorationScheduler.java:331)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
Exception in thread "ModelBuffer.Save" java.lang.NullPointerException
at org.eclipse.emf.ecore.xmi.impl.XMLHelperImpl.getURIFragment(XMLHelperImpl.java:719)
at org.eclipse.emf.ecore.xmi.impl.XMLHelperImpl.getIDREF(XMLHelperImpl.java:753)
at org.eclipse.emf.ecore.xmi.impl.XMLSaveImpl.saveIDRefSingle(XMLSaveImpl.java:1972)
at com.metamatrix.modeler.internal.core.resource.xmi.MtkXmiSaveImpl.saveIDRefSingle(MtkXmiSaveImpl.java:298)
at org.eclipse.emf.ecore.xmi.impl.XMLSaveImpl.saveFeatures(XMLSaveImpl.java:1318)
at com.metamatrix.modeler.internal.core.resource.xmi.MtkXmiSaveImpl.saveElementID(MtkXmiSaveImpl.java:248)
at org.eclipse.emf.ecore.xmi.impl.XMLSaveImpl.saveElement(XMLSaveImpl.java:1174)
at org.eclipse.emf.ecore.xmi.impl.XMLSaveImpl.saveElement(XMLSaveImpl.java:1035)
at org.eclipse.emf.ecore.xmi.impl.XMLSaveImpl.saveContainedMany(XMLSaveImpl.java:2386)
at org.eclipse.emf.ecore.xmi.impl.XMLSaveImpl.saveFeatures(XMLSaveImpl.java:1533)
at com.metamatrix.modeler.internal.core.resource.xmi.MtkXmiSaveImpl.saveElementID(MtkXmiSaveImpl.java:248)
at org.eclipse.emf.ecore.xmi.impl.XMISaveImpl.writeTopObjects(XMISaveImpl.java:90)
at org.eclipse.emf.ecore.xmi.impl.XMLSaveImpl.traverse(XMLSaveImpl.java:592)
at org.eclipse.emf.ecore.xmi.impl.XMLSaveImpl.save(XMLSaveImpl.java:256)
at org.eclipse.emf.ecore.xmi.impl.XMLResourceImpl.doSave(XMLResourceImpl.java:206)
at com.metamatrix.modeler.internal.core.resource.xmi.MtkXmiResourceImpl.doSave(MtkXmiResourceImpl.java:354)
at org.eclipse.emf.ecore.resource.impl.ResourceImpl.save(ResourceImpl.java:1406)
at com.metamatrix.modeler.internal.core.workspace.ModelBufferImpl.saveInTransaction(ModelBufferImpl.java:559)
at com.metamatrix.modeler.internal.core.workspace.ModelBufferImpl$1.run(ModelBufferImpl.java:488)
Exception in thread "ModelBuffer.Save" java.lang.NullPointerException
at org.eclipse.emf.ecore.xmi.impl.XMLHelperImpl.getURIFragment(XMLHelperImpl.java:719)
at org.eclipse.emf.ecore.xmi.impl.XMLHelperImpl.getIDREF(XMLHelperImpl.java:753)
at org.eclipse.emf.ecore.xmi.impl.XMLSaveImpl.saveIDRefSingle(XMLSaveImpl.java:1972)
at com.metamatrix.modeler.internal.core.resource.xmi.MtkXmiSaveImpl.saveIDRefSingle(MtkXmiSaveImpl.java:298)
at org.eclipse.emf.ecore.xmi.impl.XMLSaveImpl.saveFeatures(XMLSaveImpl.java:1318)
at com.metamatrix.modeler.internal.core.resource.xmi.MtkXmiSaveImpl.saveElementID(MtkXmiSaveImpl.java:248)
at org.eclipse.emf.ecore.xmi.impl.XMLSaveImpl.saveElement(XMLSaveImpl.java:1174)
at org.eclipse.emf.ecore.xmi.impl.XMLSaveImpl.saveElement(XMLSaveImpl.java:1035)
at org.eclipse.emf.ecore.xmi.impl.XMLSaveImpl.saveContainedMany(XMLSaveImpl.java:2386)
at org.eclipse.emf.ecore.xmi.impl.XMLSaveImpl.saveFeatures(XMLSaveImpl.java:1533)
at com.metamatrix.modeler.internal.core.resource.xmi.MtkXmiSaveImpl.saveElementID(MtkXmiSaveImpl.java:248)
at org.eclipse.emf.ecore.xmi.impl.XMISaveImpl.writeTopObjects(XMISaveImpl.java:90)
at org.eclipse.emf.ecore.xmi.impl.XMLSaveImpl.traverse(XMLSaveImpl.java:592)
at org.eclipse.emf.ecore.xmi.impl.XMLSaveImpl.save(XMLSaveImpl.java:256)
at org.eclipse.emf.ecore.xmi.impl.XMLResourceImpl.doSave(XMLResourceImpl.java:206)
at com.metamatrix.modeler.internal.core.resource.xmi.MtkXmiResourceImpl.doSave(MtkXmiResourceImpl.java:354)
at org.eclipse.emf.ecore.resource.impl.ResourceImpl.save(ResourceImpl.java:1406)
at com.metamatrix.modeler.internal.core.workspace.ModelBufferImpl.saveInTransaction(ModelBufferImpl.java:559)
at com.metamatrix.modeler.internal.core.workspace.ModelBufferImpl$1.run(ModelBufferImpl.java:488)
Exception in thread "ModelBuffer.Save" java.lang.NullPointerException
at org.eclipse.emf.ecore.xmi.impl.XMLHelperImpl.getURIFragment(XMLHelperImpl.java:719)
at org.eclipse.emf.ecore.xmi.impl.XMLHelperImpl.getIDREF(XMLHelperImpl.java:753)
at org.eclipse.emf.ecore.xmi.impl.XMLSaveImpl.saveIDRefSingle(XMLSaveImpl.java:1972)
at com.metamatrix.modeler.internal.core.resource.xmi.MtkXmiSaveImpl.saveIDRefSingle(MtkXmiSaveImpl.java:298)
at org.eclipse.emf.ecore.xmi.impl.XMLSaveImpl.saveFeatures(XMLSaveImpl.java:1318)
at com.metamatrix.modeler.internal.core.resource.xmi.MtkXmiSaveImpl.saveElementID(MtkXmiSaveImpl.java:248)
at org.eclipse.emf.ecore.xmi.impl.XMLSaveImpl.saveElement(XMLSaveImpl.java:1174)
at org.eclipse.emf.ecore.xmi.impl.XMLSaveImpl.saveElement(XMLSaveImpl.java:1035)
at org.eclipse.emf.ecore.xmi.impl.XMLSaveImpl.saveContainedMany(XMLSaveImpl.java:2386)
at org.eclipse.emf.ecore.xmi.impl.XMLSaveImpl.saveFeatures(XMLSaveImpl.java:1533)
at com.metamatrix.modeler.internal.core.resource.xmi.MtkXmiSaveImpl.saveElementID(MtkXmiSaveImpl.java:248)
at org.eclipse.emf.ecore.xmi.impl.XMISaveImpl.writeTopObjects(XMISaveImpl.java:90)
at org.eclipse.emf.ecore.xmi.impl.XMLSaveImpl.traverse(XMLSaveImpl.java:592)
at org.eclipse.emf.ecore.xmi.impl.XMLSaveImpl.save(XMLSaveImpl.java:256)
at org.eclipse.emf.ecore.xmi.impl.XMLResourceImpl.doSave(XMLResourceImpl.java:206)
at com.metamatrix.modeler.internal.core.resource.xmi.MtkXmiResourceImpl.doSave(MtkXmiResourceImpl.java:354)
at org.eclipse.emf.ecore.resource.impl.ResourceImpl.save(ResourceImpl.java:1406)
at com.metamatrix.modeler.internal.core.workspace.ModelBufferImpl.saveInTransaction(ModelBufferImpl.java:559)
at com.metamatrix.modeler.internal.core.workspace.ModelBufferImpl$1.run(ModelBufferImpl.java:488)