From the file docs/PORTING-GUIDE in the Policy Kit source:
"The install directory for *.policy files is now $datadir/polkit-1/actions not $datadir/PolicyKit/policy"
policykit-gnome is looking for policy files in the _old_ location /usr/share/PolicyKit/policy and should be changed to take the policy files from the new location /usr/share/polkit-1/actions. Policy files also need to be moved, but that is another problem altogether.
Reopening bug:
From the file docs/PORTING-GUIDE in the Policy Kit source:
"The install directory for *.policy files is now $datadir/ polkit- 1/actions not $datadir/ PolicyKit/ policy"
policykit-gnome is looking for policy files in the _old_ location /usr/share/ PolicyKit/ policy and should be changed to take the policy files from the new location /usr/share/ polkit- 1/actions. Policy files also need to be moved, but that is another problem altogether.