Event Viewer cannot open the event log or custom view

Am I receiving the following error because there are no tasks to display the logs in the custom view? Is so, how can I resolve it? And if not, what is the possible cause of this Event Viewer Error? I am using Windows Vista. Thanks for the help.

Administrative Events
Event Viewer
Event Viewer cannot open the event log or custom view. Verify that Event Log service is running, or query is too long. The specified query is invalid (15001)

