Write-n-Cite is producing a “Length is null or not an object” message.

If you are using Write-n-Cite III (WNC III), start by using the "Tools" menu to "Revert to WNC v. 2 document". WNC v.2 has no hidden code. All empty citation placeholders will be visible.
2. Once you have converted to WNC v. 2, or if you are using WNC 2, use Word's Find feature to find and delete instances of

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and

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3. Save your changes.
4. If you are using WNC III, use the WNC "Tools" menu to "Convert to WNC III"
5. Click on the “Bibliography” button and “Create Bibliography”