Hi Jason
I am also facing the same type of issues when converting a google doc file or even a docx file downloaded from google drive.
I am using Java 7 with docx4j 3.2
following is the stack trace:
2014-12-04 12:21:15 INFO ContentTypeManager:810 - Detected WordProcessingML package
2014-12-04 12:21:15 INFO Load3:158 - Instantiated package of type org.docx4j.openpackaging.packages.WordprocessingMLPackage
2014-12-04 12:21:15 INFO Load3:283 - Encountered (but not loading) hyperlink mailto:tariq_kkhan@yahoo.in
2014-12-04 12:21:15 WARN Load3:533 - No ...