Workflow Error

When i am submittig workflow then i am getting the following error as mentioned below:

  • SysWorkflowMessageQueueManager-run
    SysWorkflowEventDispatcher-onAcknowledgeWorkflowActivation
    ClrObject static method invocation error.
    Exception has been thrown by the target of an invocation.

Earlier workflow was working fine. whenever i am submitting workflow it is not going for Approval.

I am not able to see tracking details also.in Basic->Inquires->Workflow History.

I have started TutorialEvent_processor and Tutorial_workflowProcessor.Same error i am getting.

These all are customized workflows.