Sorry i misread about the error message. Read it like you did have one.
To make it short - It's allways a good idea, to try things in a new empty song, if you have issues. This can rule out, that it's nothing in the song, that create the error. If it turns out, it's only in an old song there are errors, then that can be examined. Did you try to load in an empty song?
I can say, that i have a similar issue with NIs Absynth Mono version in Studio One. It load, but a channel is'nt created in AL3 even if a track is. It's only the mono version that fail. But i know i'm not the only one having this issue. The issue have been verified by others. I have not seen anyone have this issue with AL3 before.
I can't say what's wrong. It can be both the DAW and AL3 that causes the error i guess.
How did you reinstall AL3? Some things need to be uninstalled manually. Here is an FQA about How to properly uninstall an Arturia software:
https://www.arturia.com/faq/installation/uninstall-remove-a-softwareArturia support may be able to be more specific.
Perhaps Presonus support can help. They might tell you to reinstall Studio One and/ or delete some files.