Matchbox's have all disappeared from the Matchbox tab in batch

[Edusanjo]

Matchbox nodes are gone in Node Bin and also in FX Nodes

Hi guys, For some unknown reason, I have lost my matchbox nodes either in the Node Bin and the Fx Node Bin. I tried to set the directory through the preferences menu, where there’s an option to set the path, but although they are all there, they are not being loaded. As I couldn’t reload them I thought, ok, let’s reinstall flame, but it detects the version is already installed and it does not go ahead. Any idea or suggestion on how to see again the nodes in the bins? Thanks