Has MS.com switched to MS4?
I created a short "test" piece, and uploaded it to MS.com. The original was done with MS 3.6.2. It looks as though MS.com sees it as MS4, and there is no playback.
Is this a problem on the remote site, or has something happened because I also have a recent MS4 nightly downloaded - though my file opens in MS 3.6.2?
At MS.com it's at: