Force a bar number to appear

[Phillip Kirlin]

My apologies if this is a simple question to answer, but I recently upgraded to 
2.6.1, and some of my 2.4.x files have their bar numbers disappearing, even 
when run through convert-ly.

The problem is that I want to force a bar number to appear in the first measure of the piece.  I'm typesetting an excerpt, so I want the output to include the bar number in the first measure, since it won't be "1".  When I changed the bar number in 2.4.x with 

\set Score.currentBarNumber = #33

then "33" was automatically printed in the first measure.  But in the 2.6.x 
series, this bar number is not printed.  Convert-ly doesn't seem to know about this 
change.  So can someone let me know how to force the bar number to appear in the first 
measure of the piece?  I've read through the manual about the tweaks to force bar numbers 
at regular intervals and such, but none of those examples show bar numbers in the very 
first measure.

Thanks,
Phil Kirlin

Go Lilypond!