How much free space do you have on it? If you have less than 1 Gb, it won't work - you'll need to take some stuff off...
If you have a lot of free space, simply restart the Zune (back button + up on the middle button) and restart the Zune Software and it should work (I had a similar problem with my Zune 80)
hope that helps....
EDIT - I too have both the Zune 80 and Zune 30 and they both work...
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I'm an To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. ...Do you know what the original ZuneMarketplace looked like?

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