This is the update you need to reopen your Money files, should you need to reinstall later on, such as installing Money on a new PC. This is something that I've had a lot of emails about recently.
Should you reinstall your Money 2005 version, before you open your file, install this update as well and you won't have any issues. If you don't install this update, you'll find that you can't open your file.
If you're using Money 2005 and have no issues, then there is no need to install this update.
Some of the articles on money.mvps.org will be updated to feature this update shortly.