If you start the accomplishments viewer from a "clean" setup per the 0.3 testing wiki page, you get a window asking you to sign up for U1. I closed that window. Then I clicked on "check for u1 account", again a window popped- up asking me to sign-up for (not sign into) U1. I closed that window too and then closed the accomplishments-viewer. Now when I re-open the viewer I get a crash. This is reproducible.
mfisch@caprica:~$ accomplishments-viewer
/usr/lib/python2.7/dist-packages/gi/overrides/Gtk.py:391: Warning: g_object_set_property: construct property "type" for object `Window' can't be set after construction
Gtk.Window.__init__(self, type=type, **kwds)
/usr/lib/python2.7/dist-packages/gi/overrides/Gtk.py:391: Warning: g_object_set_property: construct property "type" for object `EditExtrainfoDialog' can't be set after construction
Gtk.Window.__init__(self, type=type, **kwds)
Traceback (most recent call last):
File "/usr/bin/accomplishments-viewer", line 47, in <module>
accomplishments_viewer.main()
File "/usr/lib/python2.7/dist-packages/accomplishments_viewer/__init__.py", line 51, in main
window = AccomplishmentsViewerWindow.AccomplishmentsViewerWindow()
File "/usr/lib/python2.7/dist-packages/accomplishments_viewer_lib/Window.py", line 48, in __new__
new_object.finish_initializing(builder)
File "/usr/lib/python2.7/dist-packages/accomplishments_viewer/AccomplishmentsViewerWindow.py", line 237, in finish_initializing
self.finalise_daemon_connection()
File "/usr/lib/python2.7/dist-packages/accomplishments_viewer/AccomplishmentsViewerWindow.py", line 501, in finalise_daemon_connection
self.check_and_ask_for_info()
File "/usr/lib/python2.7/dist-packages/accomplishments_viewer/AccomplishmentsViewerWindow.py", line 353, in check_and_ask_for_info
self.approve_u1_trophies()
File "/usr/lib/python2.7/dist-packages/accomplishments_viewer/AccomplishmentsViewerWindow.py", line 686, in approve_u1_trophies
self.u1_button.set_label("Check for Ubuntu One account")
AttributeError: 'AccomplishmentsViewerWindow' object has no attribute 'u1_button'
Confirmed, same error here