Can't perform requested operation since the module is hidden

This error pertains to the Visual Basic extensibility (add-in) object model. This error has the following cause and solution:

• The module is hidden. You can't modify a hidden module or obtain information from a hidden module.

  Unhide the module and try the operation again.

For additional information, select the item in question and press F1 (in Windows) or HELP (on the Macintosh).