sudo /usr/share/pamac/pamac.py gave me the below and nothing showed up while it opened fine when navigating to Pamac using the menus.
[manjaro@manjaro ~]$ sudo /usr/share/pamac/pamac.py
[sudo] password for manjaro:
Traceback (most recent call last):
File "/usr/share/pamac/pamac.py", line 12, in <module>
import transaction
File "/usr/share/pamac/transaction.py", line 12, in <module>
interface.add_from_file('gui/dialogs.glade')
File "/usr/lib/python3.3/site-packages/gi/types.py", line 47, in function
return info.invoke(*args, **kwargs)
gi._glib.GError: Failed to open file 'gui/dialogs.glade': No such file or directory