Can't load or unload this object (Error 361)

A Load or Unload statement has referenced an invalid object or control. This error has the following causes and solutions:

• You tried to load or unload an object that isn't a control or form, such as Screen, Printer, or Clipboard.

  Delete the erroneous statement from your code.

• You tried to load or unload an existing control that isn't part of a control array. For example, assuming that a TextBox with the Name property Text1 exists, Load Text1 will cause this error.

  Delete the erroneous statement from your code or change the reference to a control in a control array.

• You tried to unload a Menu control in the Click event of its parent menu.

  Unload the Menu control with some other procedure.

• You tried to unload the last visible menu item of a Menu control.

  Check the setting of the Visible property for the other menu items in the control array before trying to unload a menu item or delete the erroneous statement from your code.