Loading models in GuitarML PROTEUS VST3 Plugins

Hi all,

Has anyone managed to load models in GuitarML VST3 plugins like PROTEUS or SMARTPEDAL? When I open the plugin UI, the combobox listing the models shows ‘(no choices)’ and the ‘load model’ button does not respond.

Does anyone have any ideas on how to solve this issue ?

Thanks in advance!

Additional details : I use Ardour 8.6.0 ready-to-run version on Linux Mint 21.3