Getting Ben 10 Classic: The Complete Collection, any problems I should know about?

So I just ordered Ben 10 Classic: The Complete Collection off of Amazon from WB. I was wondering is there any problems I should know about before I start watching them?

All I know is that when it first came out it was missing some of Omniverse episodes but I know that was fixed. So is there any other problems? Is there anything I should keep an eye out for when I get it?