Problem with harmonics in tablature

[AB]

Hallo list,

I have two problems with harmonics and tablature.

I've installed the 2.11.5-1 devel release to test the new features for 
tablature,
I copied the snippet code from the website:

\paper {
        # (define dump-extents #t)

        ragged-right = ##t
        indent = 0\mm
        }

\layout
{}

\relative c'
{
\sourcefileline 72
\new TabVoice
{
        <c g'\harmonic> d\2\glissando e\2
}
}

And I get this error messagge:

Interpreting music...
Preprocessing graphical objects...
programming error: FT_Get_Glyph_Name returns error
continuing, cross fingers
programming error: Glyph has no name, but font supports glyph naming.
Skipping glyph U+10002329, file
/home/andy/lilypond/usr/share/lilypond/current/fonts/otf//CenturySchL-Roma.otf
continuing, cross fingers
programming error: FT_Get_Glyph_Name returns error
continuing, cross fingers
programming error: Glyph has no name, but font supports glyph naming.
Skipping glyph U+1000232A, file
/home/andy/lilypond/usr/share/lilypond/current/fonts/otf//CenturySchL-Roma.otf
continuing, cross fingers
Layout output to `test01.ps'...
Converting to `test01.pdf'...
The 'slide' output is ok but there are't parenthesis 'round the number,
just white space.
The font 'CenturySchL-Roma.otf' doesn't seem corrupted, 
it's the same of the last stable release.
It's the first time I install a devel release, maybe I made something wrong.
Any ideas?

The second problem is with the 2.10.4 version,
if I type the simple part of a scale:

{ <g' \harmonic>8\3 <a' \harmonic>\4 <b' \harmonic>\2 }

I find the second note at the 19th fret of the 4th string (I'm in standard
tuning), this is correct
(7th and 19th harmonics are the same) but how can I place it to the 7th fret?


{ <g' \harmonic>8\3 <a \harmonic>\4^\markup "8va" <b' \harmonic>\2 }

This is the solution I've found but it's no good in notation
('a' in the second space, not over the staff).

Thank you in advance for helps.


AB