Live 9 cannot read the Library database if another Live instance is already running.
Find here a couple of suggestions in order to open your Live 8 Sets in Live 9.
Find out how to open Live Sets created in Live 8 with Live 9.
Find out how to access content on your hard drive in the Live 9 browser.
There is a Live 8 Legacy Library available as a Pack for Live 9.
Find Live Packs for Live 9 in Ableton's Pack store and install them by dragging and dropping them anywhere into Live.
When I import my Live 8 Library into Live 9, can I access my already installed Live 8 Packs as well?
Live Packs installed in the Live 8 Library will be imported and can be accessed with Live 9. Updated versions are however available for Live 9.
You can install your Live Packs for Live 8 or older in Live 9. If available, it is still recommended to install the updated version for Live 9.
Can Live 9 handle my Live 8 Library? Will it be imported or copied? Can I still use it with Live 8 afterwards?
Information on how Live 9 can access and manages the Live 8 Library.
Find out where the Live Core Library, User Library and Live packs are stored on your computer.