common-build.xml missing from nightly build

[Michael Pelz Sherman]

I get the following error when trying to build from the nightly source 
(http://lucene.zones.apache.org:8080/hudson/job/Lucene-Nightly/75/artifact/trunk/dist/lucene-nightly.tar.gz)
   
  C:\download\lucene-nightly\build.xml:7: Cannot find common-build.xml imported 
from C:\download\lucene-nightly\build.xml
   
  Did I grab the wrong file?
   
  Thanks,
  - mps