The versions might matter, but you're on the same revisions I'm on. Now, I will say that I am running from C:/Program Files(x86)/Android/android-sdk/platform-tools/ rather than just the straight C:/ prompt, just because I've been too lazy to add ADB to my system variables. I'm also using MTP, which shouldn't affect it.
Yeah, things have changed quite a bit; going from the Droid line to the Fascinate was my last jump.
The only thing I can think of to try is to make sure that you are running your Command Prompt as Administrator. The fact that it's creating a file at all seems to disprove that this would have an effect, but it's worth a try.