For Sony Vegas Movie Studio Platinum 17, I originally downloaded Build 143 - it worked perfectly for me. Later on the upgrade, Build 179 was installed, leaving my MSP 17 utterly useless. I've tried redownloading 143 almost every single way I could possibly fathom but nothing seems to work. The forum site with the different builds, redownloading the original link, nothing works. When it downloads originally it will say 143, and when the download finalizes, it goes back to 179.