I also had this issue - However it was for a completely different reason then any I have seen online. I realized that my app did not have the proper iOS Provisioning profile associated for app store release. I simply changed the build number, validated and resubmitted. Within 15 minutes, the new version was ready to be added as a current build. The previous two versions I tried to upload are both still processing.
I am not sure why Apple does not tell you that there is an incorrect provisioning profile for the build to be uploaded, but this was my cure!
