I resolved or worked around the issue after reading a comment on a Red Hat bug page: https://bugzilla.redhat.com/show_bug.cgi?id=1164449#c4 It appears that the Glade utility uses an "n_rows" property field on GtkGrids that is no longer good and the UI for the Software Center has a line that has that defunct property in it.
Commenting out line 409 in /usr/share/software- center/ui/gtk3/submit_review.ui so that it looks like: <!-- <property name="n_rows">4</property> --> allowed me to then submit a review to software in the Software Center, with no discernible defects or errors. ** Bug watch added: Red Hat Bugzilla #1164449 https://bugzilla.redhat.com/show_bug.cgi?id=1164449 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to software-center in Ubuntu. https://bugs.launchpad.net/bugs/1445745 Title: Not able to write a review (Unable to show 'none') Status in software-center package in Ubuntu: Confirmed Bug description: I can't write a new review on the Software Center. Xubuntu 15.04 When I click on "Write a new review", nothing happens. Launching software-center from the terminal, the attached error appears when I press the "Write a new review" button. ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: software-center 13.10-0ubuntu6 Uname: Linux 4.0.0-040000-generic x86_64 ApportVersion: 2.17.1-0ubuntu2 Architecture: amd64 CurrentDesktop: XFCE Date: Sat Apr 18 11:27:14 2015 InstallationDate: Installed on 2015-03-27 (21 days ago) InstallationMedia: Xubuntu 15.04 "Vivid Vervet" - Beta amd64 (20150326) PackageArchitecture: all SourcePackage: software-center UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/software-center/+bug/1445745/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

