Build Error while installing ontology cell

Hopefully I'm posting this to the appropriate place. I'm attempting to install the Ontology cell and I'm getting the following build error. I've included the command and the log of the build.

I'm at a loss as I'm not familiar enough with Ant to trace this to the root issue. I've been able to build and deploy the project management module with out issue.

I've configured the various properties files as outlined in the ontology installation guide.

Any assistance is appreciated.

If anymore information is needed please let me know.

Thanks.

C:\Program Files\Java\apache-ant-1.6.5-bin\apache-ant-1.6.5\bin>ant -f "C:\Prog
am Files\Java\I2B2_Source\edu.harvard.i2b2.ontology\master_build.xml" clean bui
d-all deploy

Buildfile: C:\Program Files\Java\I2B2_Source\edu.harvard.i2b2.ontology\master_b
ild.xml

common_init:

common_clean:
     [echo] Cleaning non-source directories in C:\Program Files\Java\I2B2_Sourc
\edu.harvard.i2b2.ontology
   [delete] Deleting directory C:\Program Files\Java\I2B2_Source\edu.harvard.i2
2.ontology\classes
   [delete] Deleting directory C:\Program Files\Java\I2B2_Source\edu.harvard.i2
2.ontology\dist
   [delete] Deleting directory C:\Program Files\Java\I2B2_Source\edu.harvard.i2
2.ontology\gensrc
   [delete] Deleting directory C:\Program Files\Java\I2B2_Source\edu.harvard.i2
2.ontology\genlib

clean:

common_init:
    [mkdir] Created dir: C:\Program Files\Java\I2B2_Source\edu.harvard.i2b2.ont
logy\genlib
    [mkdir] Created dir: C:\Program Files\Java\I2B2_Source\edu.harvard.i2b2.ont
logy\dist
    [mkdir] Created dir: C:\Program Files\Java\I2B2_Source\edu.harvard.i2b2.ont
logy\gensrc
    [mkdir] Created dir: C:\Program Files\Java\I2B2_Source\edu.harvard.i2b2.ont
logy\classes

common_clean:
     [echo] Cleaning non-source directories in C:\Program Files\Java\I2B2_Sourc
\edu.harvard.i2b2.ontology
   [delete] Deleting directory C:\Program Files\Java\I2B2_Source\edu.harvard.i2
2.ontology\classes
   [delete] Deleting directory C:\Program Files\Java\I2B2_Source\edu.harvard.i2
2.ontology\dist
   [delete] Deleting directory C:\Program Files\Java\I2B2_Source\edu.harvard.i2
2.ontology\gensrc
   [delete] Deleting directory C:\Program Files\Java\I2B2_Source\edu.harvard.i2
2.ontology\genlib

build-all:

common_init:

init:

compile:

dist:
     [echo] i2b2Common: Creating the archive package!
     [copy] Copying 1 file to C:\Program Files\Java\I2B2_Source\edu.harvard.i2b
.ontology\genlib

dist:
     [echo] Ontology: Creating the archive package!

common_init:
    [mkdir] Created dir: C:\Program Files\Java\I2B2_Source\edu.harvard.i2b2.ont
logy\dist
    [mkdir] Created dir: C:\Program Files\Java\I2B2_Source\edu.harvard.i2b2.ont
logy\gensrc
    [mkdir] Created dir: C:\Program Files\Java\I2B2_Source\edu.harvard.i2b2.ont
logy\classes

common-classpath:

init:

jaxb_gen:
      [xjc] Consider using <depends>/<produces> so that XJC won't do unnecessar
 compilation
      [xjc] Compiling file:/C:/Program Files/Java/I2B2_Source/edu.harvard.i2b2.
ml/xsd/cell/ont_1.1/ONT_QRY.xsd and others

BUILD FAILED
C:\Program Files\Java\I2B2_Source\edu.harvard.i2b2.ontology\master_build.xml:13
 The following error occurred while executing this line:
C:\Program Files\Java\I2B2_Source\edu.harvard.i2b2.ontology\build.xml:80: The f
llowing error occurred while executing this line:
C:\Program Files\Java\I2B2_Source\edu.harvard.i2b2.ontology\build.xml:44: java.
ang.NullPointerException

Total time: 2 seconds
C:\Program Files\Java\apache-ant-1.6.5-bin\apache-ant-1.6.5\bin>