lvalue <-> rvalue problem

[Namespace]

> And that prevents a workaround for the missing auto ref. :o)
> It seems dmd 2.060 is far more useable than 2.061 (for users 
> which use structs, of course).
> I will switch back.

I'm still interested in this problem. But how can I identify the 
specific compiler code where this error comes from?
I know where the error is thrown and where the matching fail 
comes from (expression.c) but not _why_ the matching fails happen.
Could you give me a quick explanation?