Problem building cents from cvs

Hi,
I get the following error when I try to build the cents from CVS (using the
latest centipede from cvs also)

D:\cvs\new\krysalis-cents>cent gump
Searching for centibuild.xml ...
Buildfile: D:\cvs\new\krysalis-cents\centibuild.xml
ant.home=z:
centipede.home=${centipede.home}
Initializing Centipede...
...Centipede started.
Building project Named:  krysalis-cents-site
Dependency sequence for project `krysalis-cents-site' is

              * ===================================== *
              |   Krysalis Centipede Build System     |
              * ===================================== *

    --------------------------------------------------------------

      Using Apache Ant version 1.6alpha compiled on January 1 2003
      Build file D:\cvs\new\krysalis-cents\centibuild.xml
      Centipede dir z:
      Build number 4
      Project Name krysalis-cents
      Java Version 1.3
      Timestamp 200303201526

    --------------------------------------------------------------

OS is not Unix. Gui features enabled.

                =====================================
                   building  krysalis-cents-site
                =====================================



bootstrap-cents:
Initializing Centipede...
Duplicated project name in import. Project centipede defined first in
z:\src\core\xbuild.xml and again in z:\src\core\xbuild.xml
Duplicated project name in import. Project makecent.cent defined first in
D:\cvs\new\krysalis-cents\makecent\src\xbuild.xml and again in
D:\cvs\new\krysalis-cents\makecent\src\xbuild.xml

              * ===================================== *
              |   Krysalis Centipede Build System     |
              * ===================================== *

    --------------------------------------------------------------

      Using Apache Ant version 1.6alpha compiled on January 1 2003
      Build file D:\cvs\new\krysalis-cents\makecent\centibuild.xml
      Centipede dir z:
      Build number 5
      Project Name makecent
      Java Version 1.3
      Timestamp 200303201526

    --------------------------------------------------------------

OS is not Unix. Gui features enabled.

                =====================================
                   building  makecent-cent
                =====================================



BUILD FAILED
file:///D:/cvs/new/krysalis-cents/makecent/src/xbuild.xml:77: Reference
lib.fileset.export.jars not found.


Does anyone know what Im doing wrong?
The "centipede.home=${centipede.home}" line looks wrong to me?

thanks,
Paul.
Paul O'Neill . · ´ ¯ ` ®
Software Engineer                DDI: (01) 2400 522
Online Travel Solutions         Tel:(01) 2400 500
Sabre                                  www.sabre.com