I have just released version v4.3.1 of mydefrag.
You can download from the MyDefrag website at: http://www.mydefrag.com/
* Added the Windows "bootstat.dat" file to the build-in list of special exceptions.
* To my great chagrin I have found that some programs can crash (most notably MySQL and uTorrent) if the disk on which they have open files is dismounted with the MyDefrag DismountVolume
command. The command was used in the DataDisk scripts that were introduced in the previous version. I have now removed it.