i had the same problem and solved it apart from these files:
studio one instruments vol 1
studio one instruments vol 2
my tip:
user defined installation, do not use full installation.
reboot your computer when installation or download failed
after reboot start partial installation again
at the moment it seems studio one instruments vol. 1 + 2 are not compatible with Version 5
system: virtual machine, windows 10-2004, amd 1920X, 32GB