External Component has thrown an exception

[Manu]

whenever i set the CrystalReports ReportsDocument Objects SetDataSource()
method.. I recieve this error.

What might be the reason????

Please help


System.Runtime.InteropServices.SEHException: External component has thrown
an exception.
at PEGetNActiveJobs()
at
CrystalDecisions.CrystalReports.Engine.ReportDocument.GetConcurrentUsage()
at CheckLicenseStatus()
at CrystalDecisions.CrystalReports.Engine.ReportDocument.0(String w,
OpenReportMethod x, Int16 y)
at CrystalDecisions.CrystalReports.Engine.ReportClass.0(String O,
OpenReportMethod P, Int16 Q)
at
CrystalDecisions.CrystalReports.Engine.ReportDocument.SetDataSource(Object
value)
at SukhdaHospital.IndoorBill.Save_Click(Object sender, EventArgs e) in
c:\documents and settings\manu singhal\my documents\visual studio
projects\sukhdahospital\sukhdahospital\sukhdahospital\indoorbill.cs:line
1450
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons
button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ButtonBase.WndProc(Message& m)
at System.Windows.Forms.Button.WndProc(Message& m)
at System.Windows.Forms.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg,
IntPtr wparam, IntPtr lparam)