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Created attachment 571437 [details]
Screenshot showing the error and number of notifications

Description of problem:

Visiting the Syn Management page for an Org gives me undefined method `<=>' for nil:NilClass and a 500 Internal Server error. As per discussion with Ivan, this is a regression of https://bugzilla.redhat.com/show_bug.cgi?id=798376.

Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
1. Create  new repo with some bigger amount of packages, e.g. http://repos.fedorapeople.org/repos/katello/katello/fedora-16/x86_64/ should be good
2. set sync plan for it
3. synchronize it manually after that
4. optionally, refresh the sync status page while synchronizing
  
Actual results:

Subsequent visits to the Sync Management page return a *undefined method `<=>' for nil:NilClass* notification. It also generates hundreds of notification messages.

Expected results:


Additional info:

Verified:
* candlepin-0.5.26-1.el6.noarch
* candlepin-tomcat6-0.5.26-1.el6.noarch
* katello-0.1.306-1.el6.noarch
* katello-all-0.1.306-1.el6.noarch
* katello-candlepin-cert-key-pair-1.0-1.noarch
* katello-certs-tools-1.0.4-1.el6.noarch
* katello-cli-0.1.107-1.el6.noarch
* katello-cli-common-0.1.107-1.el6.noarch
* katello-common-0.1.306-1.el6.noarch
* katello-configure-0.1.104-1.el6.noarch
* katello-glue-candlepin-0.1.306-1.el6.noarch
* katello-glue-foreman-0.1.306-1.el6.noarch
* katello-glue-pulp-0.1.306-1.el6.noarch
* katello-qpid-broker-key-pair-1.0-1.noarch
* katello-qpid-client-key-pair-1.0-1.noarch
* katello-selinux-0.1.8-1.el6.noarch
* pulp-1.0.0-4.el6.noarch
* pulp-common-1.0.0-4.el6.noarch
* pulp-selinux-server-1.0.0-4.el6.noarch

*** Bug 835422 has been marked as a duplicate of this bug. ***

getting rid of 6.0.0 version since that doesn't exist