Patch loading works!
On Rack I have an empty template, if I open Rack it stays open.
If I open the saved patches (so without my modules because I just created the first one) the patches open and everything works, I can play, move the cables, turn the knobs, everything is fine.
For example, if I want to add a VCO and then press the right button, Rack crashes.
But this only does it with my plugin installed, if I delete it it works fine.