Hi all. I just got a brand new iMac and I was excited about trying the free trial of Logic Pro X. If I like it I plan on purchasing it. However, I can't get the trial to install. I've downloaded LogicProXTrial.dmg twice from Apple, and each time I get a warning popup stating "The following disk images couldn't be opened" for reason of "invalid checksum". Can anyone help me with this? Thanks!