Reset the options for error trapping to "Break on Unhandled Errors".  To do this, do the following:

  1. In the Visual Basic compiler, go to the "Tools" Menu and select "Options".
  2. Go to the "General" Tab.
  3. Under the "Error Trapping" section, select the radio button for "Break on Unhandled Errors".
  4. Click "OK" and continue working.