Getting "Error has occurred" in Hp vugen while replaying script

I just recorded a scripts when i try to replay it ,i'm getting an error occurred and unable to close the application.

i verified in logs and came to know as below:

2015-05-07 10:09:48,858 VUGEN         [ 1] ERROR - Failed to close the open solution

HP.Utt.Debugger.UttDebuggerInvalidDebuggerStateException: The debugger must be in state Running, Paused instead of Stopped to execute this operation.

   at HP.Utt.Debugger.UttDebuggerImp.CheckState(UttDebuggerState requiredState) in e:\LT\UTT\win32_release\12.0.776.2\src\Infra\app\UttDebugger\UttDebuggerImp.cs:line 435

   at HP.Utt.Debugger.UttDebuggerImp.StopDebugging() in e:\LT\UTT\win32_release\12.0.776.2\src\Infra\app\UttDebugger\UttDebuggerImp.cs:line 1551

   at HP.Utt.Debugger.UttDebugger.Stop() in e:\LT\UTT\win32_release\12.0.776.2\src\Infra\app\UttDebugger\UttDebugger.cs:line 349

   at HP.Utt.ProjectSystem.UttProjectService.CheckIfCancellingCloseWhileDebugging() in e:\LT\UTT\win32_release\12.0.776.2\src\Infra\app\UTTProjectSystem\UttProjectService.cs:line 421

   at HP.Utt.ProjectSystem.UttProjectService.CloseOpenSolution() in e:\LT\UTT\win32_release\12.0.776.2\src\Infra\app\UTTProjectSystem\UttProjectService.cs:line 441

   at HP.LR.Vugen.BackEnd.Project.ProjectSystem.VuGenProjectService.<>c__DisplayClassc.<CloseOpenSolution>b__b() in e:\LT\LT-LR\win32_release\12.0.1362.0_clean\app\VuGen\BackEnd\Current\Project\ProjectSystem\VugenProjectService.cs:line 1510

Please help me on this.

Thanks&Regards

Manojkumar Tenali