Just move the old Sonic 3 SE plugins.
Having that AND Sonic/HALion 7 installed has caused some of my non Steinberg hosts fits.
I went to the VST3 folder and did a ‘cut’ and ‘paste’ of the old Sonic 3 SE vst wrapper and Help directory to some side directory that those hosts don’t scan. All is fine.
Go to “%SYSTEMDRIVE%\Program Files\Common Files\VST3"\Steinberg”.
You’ll want to move the “HALion Sonic SE” directory that has inside: Halion Sonic SE.vst3, and Help".
Right click the “HALion Sonic SE” directory and choose ‘cut’.
Make a new folder like: “%SYSTEMDRIVE%\Program Files\Common Files\VST3.disabled\Steinberg”.
Go inside that, right click and chose ‘paste’ (or tap ctrl-v). Windows asks for permission to move the files.
Now the old Sonic 3 SE plugin has been moved to a directory that your hosts shouldn’t scan.
Now have Ableton rescan plugins (or restart it, however it’s done in Ableton).
If I ever need Sonic 3 SE back…I can ‘move’ the newer ones out of the VST3 folder and ‘move’ the old one back.
If for some reason you still have Sonic 3 SE in your VST2 folder, it should be OK since there is no such thing as Sonic/HALion 7 in VST2 format, but you could move those too if for some reason it’s still not working. Sonic 3 SE also kept a backup of the VST2 dll plugin in: “%SYSTEMDRIVE%\Program Files\Common Files\Steinberg\Shared Components”. So you might check that your DAW is NOT scanning that directory for plugins.
Also double check that you have received your Sonic 7 key in your Mysteinberg account. Log in and look in the Products tab.
Open your Steinberg Activation center and make sure Sonic 7 is activated.
If you have any HALion content that needs the old eLicenser and/or dongle (pretty much everything that doesn’t ship with Cubase/Nuendo/Dorico or Sonic Collections/H7), make sure all that is setup as well. Yes, even free sounds you can grab various places ‘might’ still require the old eLicenser setup depending upon if they might have borrowed bits and pieces from different content libraries while building presets.