Program: 125458
Project: 125458
Buggy source:
public String[] handleImportJarDialog(Shell shell,String moduleName){
  FileDialog fileDialog=new FileDialog(shell,SWT.OPEN | SWT.MULTI);
  fileDialog.setFilterExtensions(FilesUtils.getAcceptJARFilesSuffix());
  fileDialog.open();
  final String path=fileDialog.getFilterPath();
  final String[] fileNames=fileDialog.getFileNames();
  BusyIndicator.showWhile(Display.getDefault(),new Runnable(){
    @Override public void run(){
      for (int i=0; i < fileNames.length; i++) {
        String fileName=fileNames[i];
        File file=new File(path + File.separatorChar + fileName);
        File tempFile=null;
        try {
          if (fileNames.length == 1 && !file.isDirectory() && !file.getName().equals(moduleName)) {
            Project project=ProjectManager.getInstance().getCurrentProject();
            IProject fsProject=ResourceUtils.getProject(project);
            IFolder tmpFolder=fsProject.getFolder("String_Node_Str");
            if (!tmpFolder.exists()) {
              tmpFolder.create(true,true,null);
            }
            tempFile=new File(tmpFolder.getLocation().toPortableString(),moduleName);
            FilesUtils.copyFile(file,tempFile);
            file=tempFile;
            fileNames[i]=file.getName();
          }
          LibManagerUiPlugin.getDefault().getLibrariesService().deployLibrary(file.toURL());
          if (tempFile != null) {
            FilesUtils.deleteFile(tempFile,true);
          }
        }
 catch (        Exception e) {
          ExceptionHandler.process(e);
          continue;
        }
      }
      cleanupLib(new HashSet<String>(Arrays.asList(fileNames)));
    }
  }
);
  return fileNames;
}

Fixed version (ground truth):
public String[] handleImportJarDialog(Shell shell,String moduleName){
  FileDialog fileDialog=new FileDialog(shell,SWT.OPEN | SWT.MULTI);
  fileDialog.setFilterExtensions(FilesUtils.getAcceptJARFilesSuffix());
  fileDialog.open();
  final String path=fileDialog.getFilterPath();
  final String[] fileNames=fileDialog.getFileNames();
  BusyIndicator.showWhile(Display.getDefault(),new Runnable(){
    @Override public void run(){
      for (int i=0; i < fileNames.length; i++) {
        String fileName=fileNames[i];
        File file=new File(path + File.separatorChar + fileName);
        File tempFile=null;
        try {
          if (moduleName != null && fileNames.length == 1 && !file.isDirectory() && !file.getName().equals(moduleName)) {
            Project project=ProjectManager.getInstance().getCurrentProject();
            IProject fsProject=ResourceUtils.getProject(project);
            IFolder tmpFolder=fsProject.getFolder("String_Node_Str");
            if (!tmpFolder.exists()) {
              tmpFolder.create(true,true,null);
            }
            tempFile=new File(tmpFolder.getLocation().toPortableString(),moduleName);
            FilesUtils.copyFile(file,tempFile);
            file=tempFile;
            fileNames[i]=file.getName();
          }
          LibManagerUiPlugin.getDefault().getLibrariesService().deployLibrary(file.toURL());
          if (tempFile != null) {
            FilesUtils.deleteFile(tempFile,true);
          }
        }
 catch (        Exception e) {
          ExceptionHandler.process(e);
          continue;
        }
      }
      cleanupLib(new HashSet<String>(Arrays.asList(fileNames)));
    }
  }
);
  return fileNames;
}