Ubuntu software center broken

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http://askubuntu.com – I just upgraded to 13.10 and, when I try to open the software center from the lens nothing happens, and from the command line I get this: ethan@System-76:~$ software-center 2013-07-16 04:59:07,597 - softwarecenter.ui.gtk3.app - INFO - setting up proxy 'None' Traceback (most recent call last): File "/usr/bin/software-center", line 130, in <module> app = SoftwareCenterAppGtk3(options, args) File "/usr/share/software-center/softwarecenter/ui/gtk3/app.py", line 429, in __init__ self.useful_cache = UsefulnessCache(True) File "/usr/share/software-center/softwarecenter/backend/re (HowTos)