I get this message when the installer hits 27% or even 1%. The installer was unable to read the file "Repack-MPQ/fileset.base#Campaigns#Liberty.SC2Campaign#base.SC2Assets/Assets/StoryModeCharacters/Terran/SM_Arcturus_RequiredAnims/SM_Arcturus_RequiredAnims.m3a". This error may be caused by problems with the media or drive at /Volumes/StarCraft II Disc/--for example, a scratched or dirty CD-ROM/DVD-ROM, hard drive corruption, or a networking problem while downloading the installer. (The error code was 105.) If this problem persists, please contact Blizzard Technical Support. (ReadJob::Execute)