that's pretty much it. Opening software center works with the 'all' tab loading fine, but when I try to search anything or access any other tabs it has an eternal loading screen. I am running a recently updated ubuntu 16.04 on a 64 bit computer if that helps.
I tried the solution of similar problems in older versions of Ubuntu but they don't have any effect.
when I run software center from the terminal I get this:
zephyzu@zephyzu:~$ software-center
/usr/bin/software-center:25: PyGIWarning: Gtk was imported without specifying a version first. Use gi.require_version('Gtk', '3.0') before import to ensure that the right version gets loaded.
from gi.repository import Gtk, GObject
/usr/share/software-center/softwarecenter/ui/gtk3/views/purchaseview.py:29: PyGIWarning: WebKit2 was imported without specifying a version first. Use gi.require_version('WebKit2', '4.0') before import to ensure that the right version gets loaded.
from gi.repository import WebKit2 as webkit
/usr/share/software-center/softwarecenter/ui/gtk3/widgets/symbolic_icons.py:23: PyGIWarning: PangoCairo was imported without specifying a version first. Use gi.require_version('PangoCairo', '1.0') before import to ensure that the right version gets loaded.
from gi.repository import Gtk, Gdk, GLib, PangoCairo
2016-05-28 14:21:23,340 - softwarecenter.ui.gtk3.app - INFO - setting up proxy 'None'
2016-05-28 14:21:24,079 - softwarecenter.backend.reviews - WARNING - Could not get usefulness from server, no username in config file
2016-05-28 14:21:24,082 - softwarecenter.plugin - INFO - activating plugin '<module 'webapps_activation' from '/usr/share/software-center/softwarecenter/plugins/webapps_activation.pyc'>'
2016-05-28 14:21:24,119 - softwarecenter.db.pkginfo_impl.aptcache - INFO - aptcache.open()
2016-05-28 14:21:24,905 - softwarecenter.db.update - WARNING - failed to load file /var/lib/apt-xapian-index/cataloged_times.p: unsupported pickle protocol: 3
/usr/share/software-center/softwarecenter/ui/gtk3/widgets/videoplayer.py:29: PyGIWarning: Gst was imported without specifying a version first. Use gi.require_version('Gst', '1.0') before import to ensure that the right version gets loaded.
from gi.repository import Gst
/usr/bin/software-center:184: Warning: Source ID 70 was not found when attempting to remove it
Gtk.main()
/usr/bin/software-center:184: Warning: Source ID 142 was not found when attempting to remove it
Gtk.main()
2016-05-28 14:21:27,507 - softwarecenter.db.update - WARNING - failed to load file /var/lib/apt-xapian-index/cataloged_times.p: unsupported pickle protocol: 3
2016-05-28 14:21:28,779 - softwarecenter.db.utils - INFO - software-center-agent finished with status 0