Program: 123483
Project: 123483
Buggy source:
protected void openAnotherVersion(final RepositoryNode node,final boolean readonly){
  try {
    if (node.getObject() != null) {
      Item item=node.getObject().getProperty().getItem();
      IWorkbenchPage page=getActivePage();
      IEditorPart editorPart=null;
      RepositoryEditorInput fileEditorInput=null;
      ICodeGeneratorService codeGenService=(ICodeGeneratorService)GlobalServiceRegister.getDefault().getService(ICodeGeneratorService.class);
      if (item instanceof ProcessItem) {
        ProcessItem processItem=(ProcessItem)item;
        fileEditorInput=new ProcessEditorInput(processItem,true,false,readonly);
      }
 else       if (item instanceof BusinessProcessItem) {
        BusinessProcessItem businessProcessItem=(BusinessProcessItem)item;
        IFile file=CorePlugin.getDefault().getDiagramModelService().getDiagramFileAndUpdateResource(page,businessProcessItem);
        fileEditorInput=new RepositoryEditorInput(file,businessProcessItem);
      }
 else       if (item instanceof RoutineItem) {
        RoutineItem routineItem=(RoutineItem)item;
        ITalendSynchronizer routineSynchronizer=codeGenService.createRoutineSynchronizer();
        IFile file=null;
        ProxyRepositoryFactory factory=ProxyRepositoryFactory.getInstance();
        String lastVersion=factory.getLastVersion(routineItem.getProperty().getId()).getVersion();
        String curVersion=routineItem.getProperty().getVersion();
        if (curVersion != null && curVersion.equals(lastVersion)) {
          file=routineSynchronizer.getFile(routineItem);
        }
 else {
          file=routineSynchronizer.getRoutinesFile(routineItem);
        }
        fileEditorInput=new RoutineEditorInput(file,routineItem);
      }
 else       if (item instanceof SQLPatternItem) {
        SQLPatternItem patternItem=(SQLPatternItem)item;
        ISQLPatternSynchronizer SQLPatternSynchronizer=codeGenService.getSQLPatternSynchronizer();
        SQLPatternSynchronizer.syncSQLPattern(patternItem,true);
        IFile file=SQLPatternSynchronizer.getSQLPatternFile(patternItem);
        fileEditorInput=new RepositoryEditorInput(file,patternItem);
      }
      if (fileEditorInput != null) {
        editorPart=page.findEditor(fileEditorInput);
        if (editorPart == null) {
          fileEditorInput.setRepositoryNode(node);
          if (item instanceof ProcessItem) {
            page.openEditor(fileEditorInput,MultiPageTalendEditor.ID,readonly);
          }
 else           if (item instanceof BusinessProcessItem) {
            CorePlugin.getDefault().getDiagramModelService().openBusinessDiagramEditor(page,fileEditorInput);
          }
 else {
            ECodeLanguage lang=((RepositoryContext)CorePlugin.getContext().getProperty(Context.REPOSITORY_CONTEXT_KEY)).getProject().getLanguage();
            String talendEditorID="String_Node_Str" + lang.getCaseName() + "String_Node_Str";
            page.openEditor(fileEditorInput,talendEditorID);
          }
        }
 else {
          page.activate(editorPart);
        }
      }
 else {
        try {
          if (item instanceof JobScriptItem) {
            IProject fsProject=ResourceModelUtils.getProject(ProjectManager.getInstance().getCurrentProject());
            openXtextEditor(node,fsProject);
          }
        }
 catch (        PersistenceException e) {
          ExceptionHandler.process(e);
        }
      }
    }
  }
 catch (  PartInitException e) {
    MessageBoxExceptionHandler.process(e);
  }
catch (  PersistenceException e) {
    MessageBoxExceptionHandler.process(e);
  }
catch (  SystemException e) {
    MessageBoxExceptionHandler.process(e);
  }
}

Fixed version (ground truth):
protected void openAnotherVersion(final RepositoryNode node,final boolean readonly){
  try {
    if (node.getObject() != null) {
      Item item=node.getObject().getProperty().getItem();
      IWorkbenchPage page=getActivePage();
      IEditorPart editorPart=null;
      RepositoryEditorInput fileEditorInput=null;
      ICodeGeneratorService codeGenService=(ICodeGeneratorService)GlobalServiceRegister.getDefault().getService(ICodeGeneratorService.class);
      if (item instanceof ProcessItem) {
        ProcessItem processItem=(ProcessItem)item;
        fileEditorInput=new ProcessEditorInput(processItem,true,false,readonly);
      }
 else       if (item instanceof BusinessProcessItem) {
        BusinessProcessItem businessProcessItem=(BusinessProcessItem)item;
        IFile file=CorePlugin.getDefault().getDiagramModelService().getDiagramFileAndUpdateResource(page,businessProcessItem);
        fileEditorInput=new RepositoryEditorInput(file,businessProcessItem);
      }
 else       if (item instanceof RoutineItem) {
        RoutineItem routineItem=(RoutineItem)item;
        ITalendSynchronizer routineSynchronizer=codeGenService.createRoutineSynchronizer();
        IFile file=null;
        ProxyRepositoryFactory factory=ProxyRepositoryFactory.getInstance();
        String lastVersion=factory.getLastVersion(routineItem.getProperty().getId()).getVersion();
        String curVersion=routineItem.getProperty().getVersion();
        if (curVersion != null && curVersion.equals(lastVersion)) {
          file=routineSynchronizer.getFile(routineItem);
        }
 else {
          file=routineSynchronizer.getRoutinesFile(routineItem);
        }
        fileEditorInput=new RoutineEditorInput(file,routineItem);
      }
 else       if (item instanceof SQLPatternItem) {
        SQLPatternItem patternItem=(SQLPatternItem)item;
        ISQLPatternSynchronizer SQLPatternSynchronizer=codeGenService.getSQLPatternSynchronizer();
        SQLPatternSynchronizer.syncSQLPattern(patternItem,true);
        IFile file=SQLPatternSynchronizer.getSQLPatternFile(patternItem);
        fileEditorInput=new RepositoryEditorInput(file,patternItem);
      }
      if (fileEditorInput != null) {
        editorPart=page.findEditor(fileEditorInput);
        if (editorPart == null) {
          fileEditorInput.setRepositoryNode(node);
          if (item instanceof ProcessItem) {
            page.openEditor(fileEditorInput,MultiPageTalendEditor.ID,readonly);
          }
 else           if (item instanceof BusinessProcessItem) {
            CorePlugin.getDefault().getDiagramModelService().openBusinessDiagramEditor(page,fileEditorInput);
          }
 else {
            ECodeLanguage lang=((RepositoryContext)CorePlugin.getContext().getProperty(Context.REPOSITORY_CONTEXT_KEY)).getProject().getLanguage();
            String talendEditorID="String_Node_Str" + lang.getCaseName() + "String_Node_Str";
            page.openEditor(fileEditorInput,talendEditorID);
          }
        }
 else {
          page.activate(editorPart);
        }
      }
 else {
        try {
          if (item instanceof JobScriptItem) {
            IProject fsProject=ResourceModelUtils.getProject(ProjectManager.getInstance().getCurrentProject());
            openXtextEditor(node,fsProject,readonly);
          }
        }
 catch (        PersistenceException e) {
          ExceptionHandler.process(e);
        }
      }
    }
  }
 catch (  PartInitException e) {
    MessageBoxExceptionHandler.process(e);
  }
catch (  PersistenceException e) {
    MessageBoxExceptionHandler.process(e);
  }
catch (  SystemException e) {
    MessageBoxExceptionHandler.process(e);
  }
}