As above - I’m sick of seeing this error and having no idea where the problem lies.
Can I tell which bones are causing the issue via the error report? Visually, I can’t see anything that shouldn’t work. Presumably there must be some indicator of when the automatic weights function is failing?
 Now I’m really annoyed - it works when I scale the mesh up by a factor of 7. Still, I’d like to know where the function fails, if there is a way?