Are you sure it actually hangs, rather than just "doesn't appear to do anything for some time"? As mentioned above, have you tried using the third-party installer app, Pacifist, instead of Apple's ...
It's under 15 Gb, and one of the smallest sample libraries around. You will need to decide if you have room for that on your system drive or not.
There are no separate versions to choose. A standalone app and the VST plug-ins are installed as part of the complete installation of a Garritan product.
A standalone app of the ARIA Player should be installed as part of the complete installation.
According to the system requirements webpage, yes, it'll work with Sierra, but no further. If you need to upgrade your OS beyond that, you'll need to update Finale. https://makemusic.zendesk.com/...
ARIA works as a VST on Windows, yes. Are you asking how to register a Garritan product, or something else?
Finale comes with two sets of sounds: the SmartMusicSoftSynth, which is synthesized, and GIFF ("Garritan Instruments for Finale"), which is recorded samples of real instruments. So make sure which ...
As always: you need to make sure that where ARIA is looking is where the samples are. Or rather, that the samples are where ARIA is looking for them. Read the support page about moving the library...
... and Plogue say that MM must ask them to do it: The ARIA VST3 needs to be updated for the multi channel features to work.We cannot do this without MakeMusic requesting it.
This is usually caused by a mismatch between: a) where ARIA thinks the samples are b) where the samples actually are. Read the instructions in this support file. You need to check the contents of...