When I export my group, the resulting PyPlug doesn't work.
Everything is there, the UI, etc... but it just produces a black frame.
I noticed in the console the following message : 'The name must at least contain one character'
So I thought it may come from the Output node within the group.
And indeed there's a bug. When I try to create a new Output node in order to replace the old one,
the newly created Output node has no name, and i'm just unable to change it.