science/avogadro install failure with files missing from staging

[Jan Henrik Sylvester]

I cannot build kalzium because science/avogadro fails to install:

===>   Registering installation for avogadro-1.1.1_6
pkg-static: Unable to access file 
/usr/ports/science/avogadro/work/stage/usr/local/include/avogadro/pythonerror.h:No 
such file or directory
pkg-static: Unable to access file 
/usr/ports/science/avogadro/work/stage/usr/local/include/avogadro/pythoninterpreter.h:No 
such file or directory
pkg-static: Unable to access file 
/usr/ports/science/avogadro/work/stage/usr/local/include/avogadro/pythonscript.h:No 
such file or directory
pkg-static: Unable to access file 
/usr/ports/science/avogadro/work/stage/usr/local/lib/avogadro/1_1/extensions/pythonterminal.so:No 
such file or directory
pkg-static: Unable to access file 
/usr/ports/science/avogadro/work/stage/usr/local/lib/python2.7/site-packages/Avogadro.so:No 
such file or directory
pkg-static: Unable to access file 
/usr/ports/science/avogadro/work/stage/usr/local/share/libavogadro/engineScripts/wireframe.py:No 
such file or directory
pkg-static: Unable to access file 
/usr/ports/science/avogadro/work/stage/usr/local/share/libavogadro/extensionScripts/example.py:No 
such file or directory
*** Error code 74

I reproduced this on a clean 11.0-RELEASE/amd64.

What is wrong here?

Thanks,
Jan Henrik