Could you please try to reproduce this using the latest version of Software Center from Natty (11.04), namely Software Center 4.0. I have tried with the steps you have described, and I have failed to reproduce.
** Changed in: software-center (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/767280 Title: software-center crashed with DocNotFoundError in __init__(): Document 108 not found -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs