Error after App Store downloads additional Apple Loops and Instruments: "An error occurred while running scripts from the package “GarageBandExtraContent.pkg”.(112)"
Did anyone run into this problem? Can't install GarageBand 6.0.5 update with additional loops and instruments on macOS Sierra — after the update is downloaded, App Store reports "An error occurred while running scripts from the package “GarageBandExtraContent.pkg”.(112)" and then nothing happens. I tried to find the package after that but nothing was found (I suppose App Store app deletes the package after that).
I picked a grayed-out loop in GarageBand and selected "Download Now"/"Download Later" (tried both several times to download the loops); now this update comes every day for several days already, and I can only download it without any result.
I tried to clean up GB-related folders in /Library/Application Support and ~/Library/Application Support and re-install GB, but still have this error.
MacBook Pro, macOS Sierra (10.12)