Error installing Xuggle

zinger@megatron:~/devel/src/java/xuggler/xuggler-1.15$ ant install
Buildfile: build.xml

windows-init:

mac-init:

unix-init:

os-init:

java6.check:
     [echo] Java: java.home is /usr/lib/jvm/java-6-sun-1.6.0.10/jre and the target version is 1.6
     [echo] Ant: ant.home is /usr/share/ant and the target version is Apache Ant version 1.7.1 compiled on October 3 2008

ivy-init:
     [echo] Initing ivy from mk/buildtools/lib/ivy-2.0.0-beta2.jar
     [echo] Ivy task loaded
[ivy:settings] :: Ivy 2.0.0-beta2 - 20080225093827 :: http://ant.apache.org/ivy/ ::
[ivy:settings] :: loading settings :: file = /home/zinger/devel/src/java/xuggler/xuggler-1.15/mk/buildtools/ivysettings.xml
     [echo] Ivy settings file set

init:
     [echo] Building Library Version: 1.15.0
     [echo] Installing to /home/zinger/devel/src/java/xuggler/xuggler-1.15/target (a.k.a. /home/zinger/devel/src/java/xuggler/xuggler-1.15/target)
     [echo] Building for OS: x86_64-unknown-linux-gnu

install-java:
     [exec] sh: Can't open mk/buildtools/install-build.sh

BUILD FAILED
/home/zinger/devel/src/java/xuggler/xuggler-1.15/mk/buildtools/buildhelper.xml:529: exec returned: 2

Total time: 0 seconds