Trouble with soap skin bubble

[kellenraidfractal]

Using soap skin bubble, with simply connected edges, works really well. My more complex models more likely than not I will get an error: must have three connected edges. I assume from some maneuvering that all the edges are not connected, for I have found at least one example of this. Is there a way to be sure that the edges are indeed connected, or do I have to examine each point in detail? But even zooming onto a point I sometimes cannot tell.

[pilou]

Select all and weld them ?
You can use Recurve by Diggsey for this