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.
That error appears when the DOCX includes some invalid tag or property, such as using negative values when a positive integer is needed. Please send the DOCX to contact[at]phpdocx.com and we'll check it.