Tip for ya, Acadia, because I sooooooooooo feel your pain ... get an external hard drive and do periodic backups of your runtime folders to it.  That way, if this should happen in the future, you'll have intact copies of your runtimes saved.  You don't even need to keep the external hard drive hooked up.  Just plug it in when you want to do a backup or a restore.

Since I've moved all of my external runtimes to one of my SATA drives, my external hard drive is strictly for backups now and this is what I do.  I use Acronis' True Image 10 to run a weekly backup of my OS partition and my external runtimes.

Hugz from Phoenix, USA

Victoria

Remember, sometimes the dragon wins. Correction: MOST times.