wow,

doesn't sound good, what OS are you guys on? have you repaired permissions? If El cap you need to do it in terminal.

Perhaps I should wait to upgrade until the next BIAB 2016update, but don't want to miss the bonus pak ?? frown

requirements here, I don't see any info about GPU, just resolution

Requirements
Mac OS X 10.5 or later.
Intel Processor.
Minimum 512 MB RAM
Screen Resolution: 1024x768 or higher
At least 2 GB recommended for the main Band-in-a-Box® program. More space is required for RealTracks, depending on which package you buy... RealTracks & RealDrums: ~100-400 MB per set
Pro RealCombos: ~10 GB
MegaPAK RealCombos: ~20 GB
Full UltraPlusPAK/EverythingPAK when installed to internal hard drive: ~100 GB
(another ~90GB is required for the installation files when downloading the UltraPlusPAK or EverythingPAK)
Hard Drive versions of the EverythingPAK or UltraPlusPAK do not require any hard disk space when run directly from the external hard drive they are shipped on.

Optical drive for shipped versions of the Pro or MegaPAK version.