Q: My MacBook Pro crashed recently and unable to start. However after OCD reset it, my GarageBand was unable to function as usual. I have to repurchased it from apple.com to get it back in my Mac. I thought it was free when I purchased it?

My MacBook Pro crashed recently and unable to start after I upgrade to OS X Yosemite From Mountain Lion. However after OCD reset it, my GarageBand was unable to function as usual. I have to repurchased it from apple.com to get it back in my Mac. I thought it was free when I purchased it?