LilyPond crash when using showLastLength and a \score context with \compressfullbarrests

[James]

I am using Mac OS X 10.5.8 (if this matters)


\version "2.13.21"

%%%% This example below doesn't crash but doesn't 
%%%   show last 2 full rests either

 \relative c {
  \time 3/4
  \compressFullBarRests
  R2.*11 \bar "||"
}

showLastLength = R1*2

%%%% The example below causes a crash in LilyPond but not if 
%%%% you comment out \compressFullBarRests

MusicOne = {
  \time 3/4
  \compressFullBarRests
  R2.*11 \bar "||"
}

showLastLength = R1*2

\score {
   \new Staff {
    \MusicOne
  }
}

The message in the log is

Processing `/Users/james/Desktop/Tiny_Example.ly'
Parsing...
Interpreting music... 
Preprocessing graphical objects...
Interpreting music... 
Preprocessing graphical objects...
Solving 1 page-breaking chunks...[1: 1 pages]
Drawing systems...
/Users/james/Desktop/Tiny_Example.ly:18:2: 
programming error: Spanner `MultiMeasureRest' is not 
fully contained in parent spanner. Ignoring orphaned part
  
  R2.*11 \bar "||"

---

I discovered this while typesetting 3 different movements 
for one piece (hence I have 3 \score {\new 
Staff}} entries and it wasn't until I hit the second 
movement that I started to get the crash.

James