I have downloaded the version 7 master and installed it. I still cannot get sweetheart necklines to work. Clicking that option (when offered) simply results in no response. Choosing a different neckline works. The download page says the IE7 patch is included in the master. If true, it doesn't seem to fix the sweetheart neckline problem. (I'm not running IE7, if that matters.)
Following up on my own post... If I download the IE patch and run it, the sweetheart necklines work. In other words, the master may (or may not - I'm not running IE7 and can't test it) include the IE patch, but it doesn't seem to include the sweetheart patch. The separate IE patch does seem to.