Oh, I see that this problem is already 1 year old and doesn’t seem to be fixed yet. Have you discovered a workaround to open the presets of colliding worlds in groove agent 4?
Colliding worlds expansion seems to act strange. It doesn’t show up in media bay (no icon) nor can I search for it by attributes. I have to browse to the presets with the groove agent file browser and then, when I double click on a preset, nothing happens.