Hi, I have come across this issue too.
Something to note: I got it working yesterday (I was playing music from "Tim Jones' radio station") and the code:
worked, then I restarted my MacBook, I got the error. So I would also like to stay in the loop regarding this. And also wondering why this works sometimes so I could hopefully create a workaround. ideally, im trying to write a code that allows me to add a song to a playlist, but first it checks if its in my library with a search function (or if it is URL Track), if it can't find it, it adds the track to my library first, then rates/adds to playlist.
Very frustrating as well
Timbotz
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I FIGURED OUT A WORKAROUND!!! Its silly, but it works...
basically you can do this with system events and the MiniPlayer...
tell application "System Events"
tell its process "Music"
try
click menu item "Add to Library" of menu "Song" of menu bar 1
on error
keystroke "m" using {command down, shift down}
delay 1
click menu item "Add to Library" of menu "Song" of menu bar 1
keystroke "m" using {command down, shift down}
end try
end tell
end tell
So the background for this is I have a rate/add song to playlist function which, as we all know, doesn't work when you're playing from a URL track. I have hotkeys setup through BTT to rate [⌥ + 1-5] or add to a playlist [⌥ + z] which brings up a menu to add to.
Basically, my code now checks if the song is in my library via search function:
tell application "Music"
set searchResults to {}
set cname to ctrack's name as text
set cartist to ctrack's artist as text
set calbum to ctrack's album as text
try
set searchResults to (every track of playlist "Library" whose name contains cname and artist contains cartist and album contains calbum)
end try
end tell
return searchResults
end checkInLibrary
If it's not in my library, it adds it through the first function (which is probably very inefficient) then performs the rate/add to playlist functions.
I REALLY HOPE THIS HELPS SOMEONE because I have been going through all of the hoops to make this work...