I can't launch the Software Center anymore. I've got a blank window each time I try to open it.
I have tried to repair it by typing "software-center" in Synaptic Package Manager, and I selected it for reinstall, but it still doesn't work. I'm on Ubuntu 11.10.
sudo apt-get update didn't fix the problem
Here is the output I get when I run
2012-06-21 17:15:58,122 - softwarecenter.ui.gtk3.em - INFO - EM's: 17 15 21