[m-users.] The error message "ambiguous overloading causes type ambiguity"

[Volker Wysk]

Hi

I've got the message mentioned in the subject, but that's not the
problem. What troubles me, is which position in the source code is
reported. It isn't the line which triggers the error. Instead, the
position (line number) of the surrounding predicate is reported. 

It can be hard to find the piece of the source code, which is
ambiguous.

Cheers
Volker