Hi All: A question and plea for help please! I am new to the list. I have used the rtl-sdr/osmosdr blocks in gnuradio companion before under Ubuntu, but am having problems getting them set up under Mac OS. My gnuradio/grc install used the macports facility. Took a bit of time to get everything to compile, but grc comes up okay. I have successfully downloaded, cmake/make, and installed the rtl-sdr and gr-osmocom packages from git. I had to move all the installed files from /usr/local to /opt/local in order to get everything into the right place for the macports gnuradio to find it. What works: I can load grc and see the osmocom/rtl-sdr blocks. I can add and modify them as usual. Here's a screen shot: What doesn't work: When I generate/run the flow graph, I get messages indicating that the osmosdr module cannot be found: --- Executing: "/Users/mcquiggi/Desktop/top_block.py" Traceback (most recent call last): File "/Users/mcquiggi/Desktop/top_block.py", line 19, in <module> import osmosdr ImportError: No module named osmosdr --- Note also that from my xterm if I enter simply: Kevins-MacBook-Air:~ mcquiggi$ python -c "import osmosdr" Traceback (most recent call last): File "<string>", line 1, in <module> ImportError: No module named osmosdr Kevins-MacBook-Air:~ mcquiggi$ I get a python error. There is an 'osmosdr' directory in /opt/local/lib/python2.7/site-packages/. What I have tried: - creatling a soft link called 'osmosdr' (ln -s) in /opt/local/lib/python2.7/ to /opt/local/lib/python2.7/site-packages/osmosdr - setting PYTHONPATH to /opt/local/lib/python2.7/site-packages/ Here is the contents of /opt/local/lib/python2.7/site-packages/osmosdr: Kevins-MacBook-Air:~ mcquiggi$ ls /opt/local/lib/python2.7/site-packages/osmosdr __init__.py _osmosdr_swig.so osmosdr_swig.pyo __init__.pyc osmosdr_swig.py __init__.pyo osmosdr_swig.pyc Kevins-MacBook-Air:~ mcquiggi$ So it looks like it -may- be a simple problem to solve, but I lack the necessary knowledge of how osmosdr integrates with gnuradio. Any help appreciated, Kevin