I got a strange error in my Xcode organizer when I want to update my Provisioning profiles.
Xcode says this:
I was able to solve this issue for myself by discovering I had a couple of CSR's that I hadn't completed. Both files had the extension .certSigningRequest and had been produced through the Member Center (not Xcode). But I had not completed the upload and certificate generation, which is what Xcode was complaining about when it said "However, there is already a certificate request pending.". Once I completed those steps the problem went away.