I've been trying out the different music players, and I've settled on MixZing. It seems to be the most stable of those I've tried, and I really like the lockscreen widget. So, last night, I decided to purchase the upgrade. The problem is that it doesn't seem to take when I download it. Do I have to do something to activate the upgrade? The ads are still there, and it still tells me to upgrade when I select certain features. Also, when I go to the market and download, the upgrade license downloads, but nothing happens after that. If I pull down the notification window and tap on it, it takes me to the market screen of a different application (a different one every time). What am I missing?