title: Exception Cannot find the library com.ibm.xsp.extlib.library, required by the application /xsp/Domino9Test
body: <p>We have installed domino 9 Server, copied existing xPages based application on Server. Did some minor changes on Designer 9.0.1 when try to run on Lotus Notes Client. 8.5.2 received following exception.</p>
  
  <p>Exception
  Cannot find the library com.ibm.xsp.extlib.library, required by the application /xsp/Domino9Test!!ClientDb.nsf</p>
  
  <p>Removed all controls created in 9.0.1 and saved all design element in 8.5.2 but still same exception when try to open application in 8.5.2 client. Moreover nothing used in code new in 9.0.1.</p>
  
  <p>Server 9.0.1 and client 8.5.2 </p>
  
  <p>Please guide and tell us safe method to migrate application from 8.5.2 to 9.0.</p>
  
  <p>Thanks in advance.</p>
  
  <p>Kind Regards,
  Qaiser</p>