Missing block variable_slider

[NeuroForLunch]

All the files I tried to open with the latest gnuradio companion say variable_slider block is missing. Any suggestions?

[antonjan]

Hi You need to give me more info which application are you using and which version of Gnuradio you are using.

[NeuroForLunch]

Hi, I'm using 3.9.0.0 and every one I tried had issues. Here's some screenshots from CW_receiver.grc

[antonjan]

Hi
You can replace slider with the QT range block in V9
and you will have to add the OsmoSDR library to Gnuradio to make the osmosdr block available.