I'm running RTST v0.10.1.8 and created a custom voice pack (Starcraft 2: Protoss, yeah i'll upload it later). I sent the files over to my friend that is running version 0.9.2.9 and he ends up getting this error immediately when loading the vpk file. http://i.imgur.com/SzywfZL.jpg Yes, he knows how to use custom voice packs. If you need any additional information or you find a fix, let me know.