Indesign Error Code 3 error codes are often caused by missing system files inside the Microsoft Windows OS. Try opening your document as a copy. In order to do that, open Adobe InDesign, go to File, Open and choose Open as a copy.
Another solution is to perform a system restore. Choose Start from your taskbar, select All programs, Accessories, System Tools and System Restore. Mark the Restore my computer to an earlier date, hit Next, select a restore date and follow the instructions.