CSR uploading problem

Hi,

I have a problem with uploading Development Certificate request CSR.
After approving the request I got the mail from noreply-iphonedev@apple.com which states, that the email notifys me that a member of developer team (me) has submitted a certificate request to the Program Portal that requires an approval. After clicking approve button in front of my own request it appears in "Certificate History" tab page of "iPhone Developer Program" marked as Error.
What can be wrong with my request. I followed up all the steps provided by apple here:
http://developer.apple.com/iphone/manage/certificates/team/howto.action

Please help...
thanks