Help on Error message

[mingram]

When I open my access database I get a dialog box saying, "The expression On Click you entered as the event property setting produced the following error: File not found." So whenever I try to use any of the command buttons on the form, it gives me the same message. When I try to go to any Event Procedure to look at the code, it kicks me out and says that I have performed a illegal action. This is crutial, any info. is welcome.

Thanks in advance