I can't seem to add any more than one glyph, I can successfully create a shape, convert it to a path and add it as a glyph (using 'get curves from selection') for the letter a.
But if I try to create another glyph for b either with the same shape I just used successfully with a or another one it doesn't work, I cannot add anything.
I can add the glyph but I can't assign any shape to it, not even the same one I just assigned successfully to the first glyph for a.
If I try to add a third glyph I get the same problem, so I am limited to an alphabet of one letter which could be a slight setback

I'm not sure what to do.