Thanks, Kevin! I think that was the issue. I had, in my early days of learning about SDR, installed another version of gnuradio. Also, I was not calling the pybombs-installed gnuradio correctly. Instead of
$ pybombs run gnuradio-companion I was calling it like so: $ gnuradio-companion That is another error. I have everything working as expected now (i.e., got the OP flowgraph (and more)) working. I uninstalled all gnuradio-* components (sudo apt-get remove --purge libgnuradio*, and maybe more; try apt list --installed | grep gnuradio) installed by Ubuntu's apt-get and then, using pybombs (see https://github.com/gnuradio/pybombs), rebuilt gnuradio and added the necessary recipes. So, here's what I did: $ apt list --installed | grep gnuradio $ sudo apt-get remove --purge libgnuradio* # again, do the above and this line for everything else you may have installed using apt-get, e.g., rtl-sdr, osmosdr etc. $ pybombs -vv rebuild gnuradio $ pybombs recipes add gr-recipes git+ https://github.com/gnuradio/gr-recipes.git # may not be needed, but redid anyway. $ pybombs recipes add gr-etcetera git+ https://github.com/gnuradio/gr-etcetera.git # may not be needed, but redid anyway. $ pybombs install gr-osmosdr Marcus, thanks for your on the matter! I hope this helps someone. On Mon, Jan 30, 2017 at 7:50 PM, Kevin Reid <kpr...@switchb.org> wrote: > On Mon, Jan 30, 2017 at 11:12 AM, Sonny Rajagopalan < > sonny.rajagopa...@gmail.com> wrote: > >> RuntimeError: list contains invalid format! >> > > FWIW, I've seen this error before, and if I remember correctly it's a > symptom of multiple versions installed (such that the GR Python code is not > the same version as the GR native code). > >
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