I've seen similar issues when the Zune software is not up to date.

>Now something my wife found that makes her wish she wasn't using a Windows phone..
>
>She has taken a lot of videos with her phone of our animals doing stupid ('cute') things or just looking stupid.
>
>WP7 has no way to move videos off the phone except by synchronizing with her PC using Zune. No email, no upload to somewhere, nothing.
>
>Guess what - her phone absolutely will not synchronize with her PC. It is never recognized. Tried different cable. Tried syncing on my machine (which syncs to my WP7 phone w/no problem). Spent several hours being jerked around by AT&T, Samsung, and Microsoft trying to resolve the problem yesterday.
>
>Bottom line - Samsung will send her another phone. She has no way to offload the videos so they will be lost (period).
>
>Very impressive.
>
>Last straw for WP7. These things were not ready for prime time when they came out and they still aren't.
>
>I recommend people get something else. I'd like to except I'm stuck in a contract which will take me a while to get AT&T to let us out of.