I've opened up access to http://dev.plutext.org/svn/docx4all to anonymous reads.
I've updated docx4all so that it requires current docx4j svn (docx4j 2.7.0 will be released soon, and docx4all will use that).
To set up your development environment, set up docx4all with the dependencies in its pom.xml, but instead of docx4j in the pom, point it at docx4j svn, or the most recent nightly in http://dev.plutext.org/docx4j.
docx4all needs docx4j's dependencies. if you are using eclipse, in the build path for docx4j, you can specify that you want the dependencies exported to dependent projects.
If you are using eclipse, in your run configuration for org.docx4all.ui.main.WordMLEditor, make sure you have src\main\resources on your classpath (or things won't work).