re: reversion to 3.8.2 fails [solved]

Thank you Ron !!!!  This fixes the issues.   A number of uninstall and purges

did not fix things, but removing that cache fixed it.

The emergency was that I am presenting a 50-minute lecture on gnuradio

and the practice session is tomorrow....

-- Tom, N5EG

This is just a guess, but you could try deleting:    ~/.cache/grc_gnuradio/cache.json    Ron    On 2/19/21 07:16, Tom McDermott wrote:  

I removed gnuradio (3.9), changed the PPA to point to  gnuradio-release-3.8, updated, and installed.    Gnuradio got replaced with 3.8.2.    However all flowgraphs are  still broken, initial problems areh the number of parameters being wrong  on lots of blocks.  For example:    Traceback (most recent call last):    File "/home/tom/Desktop/top_block.py", line 285, in <module>      main()    File "/home/tom/Desktop/top_block.py", line 261, in main      tb = top_block_cls()    File "/home/tom/Desktop/top_block.py", line 131, in __init__  

    self._RxF0_win = RangeWidget(self._RxF0_range, self.set_RxF0, 'RxF0', "counter_slider", float, QtCore.Qt.Horizontal) TypeError: __init__() takes from 5 to 6 positional arguments but 7 were given