You should probably make a pip release of voc, when I installed it via pip, I get this error on the android template:
-voc-compile:
[exec] Usage: voc <path to .py file> <namespace>
[exec]
[exec] e.g.: voc tests/example.py org.pybee
BUILD FAILED
/home/blais/tmp/orange/build.xml:60: exec returned: 1
Install voc from source seems to fix the issue.
Thanks,