Missing brace for PianoStaff

[Victor S. Miller]

I'm typesetting some piano music in LP 2.2.6, which appears to work
ok, with one exception -- there is no curly brace to the left of piano
staff.  I would guess that this is due to some font problem.  Any
suggestions about tracking down the problem?
-- 
Victor S. Miller     | " ... Meanwhile, those of us who can compute can hardly
address@hidden    | be expected to keep writing papers saying 'I can do the
CCR, Princeton, NJ   | following useless calculation in 2 seconds', and indeed
    08540 USA        | what editor would publish them?"  -- Oliver Atkin