Currently Being ModeratedJul 24, 2013 12:17 PM (in response to jpfersich)
You may find the article below helpful.
Currently Being ModeratedOct 13, 2013 1:40 PM (in response to jpfersich)
Make sure that you have "Show iTunes in the Cloud Purchases" enabled in your iTunes preferences by going to iTunes > Preferences in the Store tab and clicking OK.
I still get the same error, "All purchases have been downloaded for this Apple ID" when I try to download all previous purchases at once, but now I can download each genre individually by right clicking the genre and clicking 'download'.