TabStaff and partcombine do not seem to work together

[hernan]

>just to convince the clever php guy at http://post.gmane.org/post.php that im
not top posting... 
> 

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Here goes a test case

\version "2.10.1"
melodia = \transpose c c' \partcombine { e4 g g g  }{e4 e e e }
\score
{
    <<
        \new Staff
        {    
            \set Staff.printPartCombineTexts = ##f 
            \melodia
        }
        \new TabStaff { \melodia } % commenting out this line works ok
    >>
}