Currently Being ModeratedMar 7, 2012 7:34 AM (in response to victorfromamelia island)
I was stuck in a hotel room for the weekend so I had a lot of time to problem solve the identical issue you had. Here is what I did & it worked like a charm.
1 - Turn off iTunes match on all my devices except for my MacBook Pro.
2 - I used automator for the first time in my 5 years of being a Mac convert. Launch automator, choose "Workflow", click on "Music" & drag the "Remove Empty Playlists" to the right. Run the workflow & BE PATIENT. This could take a while depending on how many thousands of empty playlists you have.
3 - After a couple of days (don't know if I had to wait this long, but it seemed important in other posts), I turned on Match on all my other devices again. I then launched iTunes. Don't be disheartened when all the playlists show up again; they will disappear after a while (1/2 hour) depending on how many there were. Again, BE PATIENT.
It's not an overly fast process, but it is effective. I hope this helps.