I am having trouble getting Google Base to accept my bulk upload with the new attributes. I have tried everything i can think of.

I get the message "Bulk upload contains some errors. 0 errors. 61 active items." When I click through the help link it says Error: Unrecognized header. I have checked the new header multiple times to make sure I have the new required attributes and everything looks fine. I have deleted the file and started over also. Anyone else having had this problem? If so, could you share the solution?