Looks like all MM themes are going to need to be updated with the new XML format. Just letting you guys know this is you haven't already noticed.
EDIT: here is a link with video and write up on new format http://forum.xda-developers.com/show...0&postcount=49
EDIT 2: uploaded the old version for people needing it for themes with just the .thm control file. Just change the .zip extension to .apk