Remotelaunch with squish

I have squish 5.1 version, that I am using for testing web applications. When I manually pass the the command shown below to squishrunner.exe, it works fine but executing the same through remotelaunch testcase fails with the following error

 Exception: 

Unable to launch SquishRunner with arguments --host 127.0.0.1 --port 4322 --testsuite "SUITE_DIRECTOY" --reportgen "xml2,DIR_NAME\RemoteLaunch_SquishRunner.xml" in directory C:\squish-5.1-20140813-0020-qt52x_web-win32-msvc10\bin. Error was: Object reference not set to an instance of an object., output from Squish was:
Object reference not set to an instance of an object.

Stack Trace:
at Inflectra.RemoteLaunch.Engines.Squish4.SquishEngine.StartExecution(AutomatedTestRun automatedTestRun)
at Inflectra.RemoteLaunch.Business.RunTestThread.Execute()