I'm running osx 10.4.9, and my Ableton crashed so i'm using garageband (getting tired of radio effect haha). And every time I download a vst plug in, I can't figure out how to install the file. I'll get messages like "there's no default application to open this program", or safari can't open find specified target. Do I need winrar or a program like that to decompress?? Thanks for any help.