Can't open idw file-says previous file contains a different component. Help!

Upon trying to open an assembly idw file, I get the following:

Previous file contains a different component from selected file.

Component substittuion is not permitted in drawings.

Please locate original component before opening this drawing.

Hello Donno47,

Welcome to the 3DCADTips Inventor Forum!
It appears that a component that the drawing is referencing is either missing or has been renamed. Check to make sure all of the component parts used to extract the views for the drawing are present in their original locations and that each component part has NOT been renamed. A check is made when the drawing is opened to make sure all parts referenced by the drawing are available.

Good Luck!
3DCADTips help Desk