If you are working on a Word document and encountering persistent errors such as Word crashing, bibliographies appearing multiple times and/or deleted items reappearing then you may have residual EndNote field codes in your document. Residual field codes can affect your document if you do not delete EndNote citations/references properly (using Edit and Manage Citations > Remove Citation instead of the delete key) when working with Word.
To remove residual EndNote field codes and 'clean up' your Word document, firstly, make a back-up copy of your document for safe-keeping, then:
This will reformat your document in your chosen style.
To ensure residual field codes do not cause problems again in future remember to delete EndNote citations/references properly if you need to (Highlight > Edit and Manage Citations > Remove Citation) instead of using the delete key.
If you are still having problems after following the instructions above, then please do get in touch.