regards
                      ______________________________
                      Jad El-khoury, PhD
                      KTH Royal Institute of Technology
                      School of Industrial Engineering and Management, Mechatronics Division 
                      Brinellvägen 83, SE-100 44 Stockholm, Sweden
                      Phone: +46(0)8 790 6877 Mobile: +46(0)70 773 93 45 jad@xxxxxx, 
                      www.kth.se
                       
                      -----Original Message-----
                      From: lyo-dev-bounces@xxxxxxxxxxx [mailto:lyo-dev-bounces@xxxxxxxxxxx] 
                      On Behalf Of Jan-Patrick Osterloh
                      Sent: 15 April 2019 11:55
                      To: lyo-dev@xxxxxxxxxxx
                      Subject: [lyo-dev] Lyo Generator Problem
                       
                      Hi,
                       
                      I just had to re-install/setup my eclipse, but now my toolchain isn't generating any more. There's no error message in eclipse, but I was able to find the following in the log file:
                      !ENTRY org.eclipse.ui 4 0 2019-04-15 11:33:14.273 !MESSAGE Unhandled 
                      event loop exception !STACK 0
                      org.eclipse.emf.ecore.resource.impl.ResourceSetImpl$1DiagnosticWrappedException:
                      org.eclipse.emf.ecore.xmi.UnresolvedReferenceException: Unresolved reference '/0/generateForServiceProviderCatalog/anAdaptorInterface'.
                      (jar:file:/C:/Users/patrick/eclipse/java-photon/eclipse/plugins/org.ec
                      lipse.lyo.oslc4j.codegenerator_2.4.0.jar!/org/eclipse/lyo/oslc4j/codeg
                      enerator/main/generate.emtl,
                      83, 155)
                          at
                      org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.handleDemandLoadEx
                      ception(ResourceSetImpl.java:319)
                          at
                      org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLoadHelper(R
                      esourceSetImpl.java:278)
                          at
                      org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResource(Resour
                      ceSetImpl.java:406)
                          at 
                      org.eclipse.acceleo.common.utils.ModelUtils.load(ModelUtils.java:391)
                          at 
                      org.eclipse.acceleo.common.utils.ModelUtils.load(ModelUtils.java:356)
                          at
                      org.eclipse.acceleo.engine.service.AbstractAcceleoGenerator.initialize
                      (AbstractAcceleoGenerator.java:485)
                          at
                      org.eclipse.lyo.oslc4j.codegenerator.main.Generate.<init>(Generate.jav
                      a:90)
                          at
                      org.eclipse.lyo.tools.codegenerator.ui.common.GenerateAll.<init>(Gener
                      ateAll.java:70)
                          at
                      org.eclipse.lyo.tools.codegenerator.ui.popupMenus.AcceleoGenerateCodeg
                      eneratorAction.run(AcceleoGenerateCodegeneratorAction.java:107)
                          at
                      org.eclipse.ui.actions.ActionDelegate.runWithEvent(ActionDelegate.java
                      :75)
                          at
                      org.eclipse.ui.internal.PluginAction.runWithEvent(PluginAction.java:23
                      7)
                          at
                      org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(
                      ActionContributionItem.java:565)
                          at
                      org.eclipse.jface.action.ActionContributionItem.lambda$4(ActionContrib
                      utionItem.java:397)
                          at 
                      org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:86)
                          at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4118)
                          at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1052)
                          at 
                      org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3931)
                          at 
                      org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3534)
                          at
                      org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(Par
                      tRenderingEngine.java:1170)
                          at
                      org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.jav
                      a:336)
                          at
                      org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartR
                      enderingEngine.java:1059)
                          at
                      org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Work
                      bench.java:153)
                          at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:667)
                          at
                      org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.jav
                      a:336)
                          at
                      org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java
                      :597)
                          at 
                      org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148)
                          at
                      org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplic
                      ation.java:152)
                          at
                      org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle
                      .java:196)
                          at
                      org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplic
                      ation(EclipseAppLauncher.java:134)
                          at
                      org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(Ecl
                      ipseAppLauncher.java:104)
                          at
                      org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.jav
                      a:388)
                          at
                      org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.jav
                      a:243)
                          at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
                          at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
                          at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
                          at java.lang.reflect.Method.invoke(Unknown Source)
                          at 
                      org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:656)
                          at org.eclipse.equinox.launcher.Main.basicRun(Main.java:592)
                          at org.eclipse.equinox.launcher.Main.run(Main.java:1498)
                      Caused by: org.eclipse.emf.ecore.xmi.UnresolvedReferenceException:
                      Unresolved reference
                      '/0/generateForServiceProviderCatalog/anAdaptorInterface'.
                      (jar:file:/C:/Users/patrick/eclipse/java-photon/eclipse/plugins/org.ec
                      lipse.lyo.oslc4j.codegenerator_2.4.0.jar!/org/eclipse/lyo/oslc4j/codeg
                      enerator/main/generate.emtl,
                      83, 155)
                          at
                      org.eclipse.emf.ecore.xmi.impl.XMLHandler.handleForwardReferences(XMLH
                      andler.java:1197)
                          at
                      org.eclipse.emf.ecore.xmi.impl.XMLHandler.endDocument(XMLHandler.java:
                      1282)
                          at
                      com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endDocume
                      nt(Unknown
                      Source)
                          at
                      com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl
                      .scanDocument(Unknown
                      Source)
                          at
                      com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Un
                      known
                      Source)
                          at
                      com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Un
                      known
                      Source)
                          at
                      com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown 
                      Source)
                          at
                      com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unk
                      nown
                      Source)
                          at
                      com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.pa
                      rse(Unknown
                      Source)
                          at
                      com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl.parse(Unknown 
                      Source)
                          at 
                      org.eclipse.emf.ecore.xmi.impl.XMLLoadImpl.load(XMLLoadImpl.java:175)
                          at
                      org.eclipse.emf.ecore.xmi.impl.XMLResourceImpl.doLoad(XMLResourceImpl.
                      java:261)
                          at
                      org.eclipse.acceleo.model.mtl.resource.EMtlResourceImpl.doLoad(EMtlRes
                      ourceImpl.java:93)
                          at
                      org.eclipse.emf.ecore.resource.impl.ResourceImpl.load(ResourceImpl.jav
                      a:1563)
                          at
                      org.eclipse.emf.ecore.resource.impl.ResourceImpl.load(ResourceImpl.jav
                      a:1342)
                          at
                      org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLoad(Resourc
                      eSetImpl.java:259)
                          at
                      org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLoadHelper(R
                      esourceSetImpl.java:274)
                          ... 37 more
                       
                      I've attached my eclipse configuration as printed out via Help - About Eclipse...
                       
                      How can I fix this?
                       
                      Best regards
                      Jan-Patrick