RQM- JunitSelenium Adapter "classnotfoundexception"

Hi

With RQM integerated with JUnitSelenium via adapter I hit with a classnotfound exception
Steps followed :
1. Set the class path in the "Test script" to the bin folder of the project where the Junit test classes exist
   So the path :C:/Junit/Junit.jar;C:\Users\IBM_ADMIN\IBM\rationalsdp\workspace_Build\JUnitSelenInteg\bin;.

2. Set the Test calss for the test script to the file to be executed
     C:\Users\IBM_ADMIN\IBM\rationalsdp\workspace_Build\JUnitSelenInteg\bin/TestHelloWorld
3. with the adapter coonected and when I execute I get the following msg in the adapter console

Failed to read serialized JUnit report object: null  Execution result will not contain step results for individual JUnit tests.
4. In the RQM window I get the script to be errored with classnotfoundexception

Pls help