Please note this is an old forum thread. Information in this post may be out-to-date and/or erroneous.
Every phpdocx version includes new features and improvements. Previously unsupported features may have been added to newer releases, or past issues may have been corrected.
If your template already has a TOC then addTableContents 'force' adding another TOC. Please try the second approach explained on our previous update, it should be easier for your specific case.