They have shipped the new Service Pack 3 version of the tool.
http://www.silect.com/mp-author
You can download the tool here: http://www.silect.com/content/mp-author-free-download-form
If you require any assistance, you can view the online support media at http://www.silect.com/mp-author-support or email them at info@silect.com
Here is a the new features that comes with SP3 (Copied it from their site):
- Improved knowledge viewing and editing in multiple language environments
- Improved XML editing
- New feature to "Check for missing display names"
- Added ability to use base classes other than LocalApplication when creating new classes
- Additional MP elements are displayed
- Added a drop down list of $$ parameters for alert messages
- Schedule property grid made more user friendly
- Improvements to memory usage
- We've also fixed a number of bugs in this release.
Hope that this quick post was helpful.