Oops, sorry. Was looking at the upcoming ZIP, not the current one. Yes, this was a bug in 3.0.11. I have updated the current ZIP, so you can download it again (make sure to download all files). Once you've done this, you should be able to perform a Mass Prune of all threads under the wiki forum so that you can restart the importer.
There are still some bugs in the MW syntax support in the current release, so I would wait until 3.0.12 before attempting to run the syntax converter.