Can't import data.

Can't import data.

I can't seem to import data. I have tried both by file and by CSV import. I click, and "Importing" flashes, but nothing changes. I'm using Windows 7 Ultimate, 64-bit, and IE 8. Thanks.
 
[eta] Same issue in Google Chrome.
 
This is not like it's difficult data.  If there's an error, I'd expect a message.