I ran the software center from the terminal and had the same error. I'm attaching a copy of the log.
Thank you ** Attachment added: "Debug log" https://bugs.launchpad.net/ubuntu/+source/software-center/+bug/1019402/+attachment/3209468/+files/software-center-debug.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1019402 Title: Unable to modify reviews due to an unknown error To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/software-center/+bug/1019402/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs