title: How to resolve "import org.eclipse.wb.swt.SWTResourceManager"
body: <p>I have a SWT application and it was working fine. I was using Google WindowBuilder Pro to build the application windows. Today I was trying to do some update on my application. So when I open it I found an error saying "<code>import org.eclipse.wb.swt.SWTResourceManager the import cannot be resolved</code>". But it was working previously. Can anyone tell me what could be the problem? </p>
  
  <p>I am using Eclipse Helios for the development. </p>