If you haven't already, try removing ~/.cache/grc_gnuradio/cache.json and restarting GRC. Then do the reselect if it still shows as an error. One or both of those should do it.
On Sun, Apr 11, 2021 at 7:09 PM David Hagood <david.hag...@gmail.com> wrote: > Has there been a release of GRC3.9 that fixes the errors in some of the > blocks that comes from the swig to pybind change? e.g. I have a flow > with the signal source, and it has this error: > > Param - Waveform(waveform): > Expression gr_waveform_t.GR_COS_WAVE is invalid for type 'int'. > > > Just reselecting the waveform doesn't change anything. > > I have the following as my repository line: > > deb http://ppa.launchpad.net/gnuradio/gnuradio-releases/ubuntu/ groovy > main > > Is there another repo I should be using? From what I have seen, this > seems to be the correct one, but maybe I missed something? > > > >