i got it from devel. it says python protobuf installed, but i still get that error? any ideas? this is exactly what it says... ~ $ mypaint Traceback (most recent call last): File "/usr/bin/mypaint", line 123, in <module> from gui import main File "/usr/share/mypaint/gui/main.py", line 15, in <module> from gui import application File "/usr/share/mypaint/gui/application.py", line 14, in <module> import filehandling, keyboard, brushmanager File "/usr/share/mypaint/gui/filehandling.py", line 18, in <module> from lib import document, helpers File "/usr/share/mypaint/lib/document.py", line 17, in <module> import command, stroke, layer File "/usr/share/mypaint/lib/command.py", line 9, in <module> import layer File "/usr/share/mypaint/lib/layer.py", line 11, in <module> import tiledsurface, strokemap, strokemap_pb2 File "/usr/share/mypaint/lib/strokemap.py", line 13, in <module> import tiledsurface, idletask, strokemap_pb2 File "/usr/share/mypaint/lib/strokemap_pb2.py", line 3, in <module> from google.protobuf import descriptor ImportError: No module named google.protobuf