Rehearsal mark visibility-lambda property

[Paul Scott]

Using 1.6.6 on Debian Sarge/Sid and copying this from this section:

Node:Rehearsal marks, Next:Bar numbers, Up:Writing parts

of the 1.6.6 manual:

\property Score.RehearsalMark \override
  #'visibility-lambda = #begin-of-line-invisible

and applying it like this:

        \global
        \property Score.BarNumber \override #'padding = #3
        \property Score.RehearsalMark \override
        #'visibility-lambda = #begin-of-line-invisible

I get:

Interpreting music...warning: Can't find property type-check for 
`visibility-lambda' (backend-type?).  Perhaps you made a typing error?

If this isn't enough information I will try a complete example.

TIA,

Paul Scott