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