adding to context voice conflicts with instrumentname

[Simon Van Damme]

Dear all

By means of the (simplified) code below, I wish to hide some part of the 
original music using "\context Voice = ...". It is important that the 
original notes and the hide/unhide specifications remain separated 
(ideally they come at the end of the score-block)

Problem: this stops working when I add an instrumentname to the original 
data. Suddenly, the additions go in a separate Staff. Does anyone knows 
where this conflict arises, so that I can sort it out?

Many thanks

Simon
Musicology Department
K.U.Leuven (Belgium)

--- CODE ---

\version "2.10.33"
\score { <<
   \new Staff {
   \set Staff.instrumentName = "name"    % OMITTING THIS LINE ...
       \new Voice = "V" { d'2 e' f' g' f' e' d'1 }
   }
% other Staves and Voices go here
   \context Voice = "V" { s2 \hideNotes s1 \unHideNotes }    % ... 
MAKES THIS LINE WORK PROPERLY
>> }

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