\build\Classes not found

Hi I am new and I am trying to build using the Jazz Build (Ant) I have specified the properties, load directories and also the build file.

But every time I submit a request I get the below error.

Can anyone help me resolve this please?

Thanks

2014-03-06 11:10:59 [Jazz build engine] 
2014-03-06 11:10:59 [Jazz build engine] Substituted the following build
property variables:
2014-03-06 11:10:59 [Jazz build engine] 	team.scm.fetchDestination =
${outputRootDirectory}\${buildLabel}   -->   team.scm.fetchDestination =
testbuild\C20140306-1110
2014-03-06 11:10:59 [Jazz build engine] 
2014-03-06 11:10:59 [Jazz build engine] 
2014-03-06 11:10:59 [Jazz build engine] Substituted the following
configuration element property variables:
2014-03-06 11:10:59 [Jazz build engine] 	com.ibm.team.build.ant :
com.ibm.team.build.ant.buildFile =
${outputRootDirectory}\${buildLabel}\NGeP-biz-fl\build\build.xml   -->
com.ibm.team.build.ant.buildFile =
${outputRootDirectory}\C20140306-1110\NGeP-biz-fl\build\build.xml
2014-03-06 11:10:59 [Jazz build engine] 	com.ibm.team.build.ant :
com.ibm.team.build.ant.buildFile =
${outputRootDirectory}\C20140306-1110\NGeP-biz-fl\build\build.xml   -->
com.ibm.team.build.ant.buildFile =
testbuild\C20140306-1110\NGeP-biz-fl\build\build.xml
2014-03-06 11:10:59 [Jazz build engine] 
2014-03-06 11:10:59 [Jazz build engine] running on host: NGEPTestJTSS01
2014-03-06 11:10:59 [Jazz build engine] Should build occur?
2014-03-06 11:10:59 [Jazz build engine] Yes: Always build a user initiated
request.
2014-03-06 11:10:59 [Jazz build engine] Invoking pre-build participant
"com.ibm.team.build.jazzscm"
2014-03-06 11:10:59 [Jazz build engine] Accepting changes into workspace
"Fullfillment  Sample Workspace" ...
2014-03-06 11:10:59 [Jazz build engine] Deleting fetch destination
"/opt/IBM/jazz/buildsystem/buildengine/eclipse/testbuild/C20140306-1110"
before fetching ...
2014-03-06 11:10:59 [Jazz build engine] Fetching files to fetch destination
"/opt/IBM/jazz/buildsystem/buildengine/eclipse/testbuild/C20140306-1110" ...
2014-03-06 11:11:01 [Jazz build engine] Invoking build participant
"com.ibm.team.build.ant"
Buildfile:
/opt/IBM/jazz/buildsystem/buildengine/eclipse/testbuild/C20140306-1110/NGeP-
biz-fl/build/build.xml

run:

BUILD FAILED
/opt/IBM/jazz/buildsystem/buildengine/eclipse/testbuild/C20140306-1110/NGeP-
biz-fl/build/build.xml:9:
/opt/IBM/jazz/buildsystem/buildengine/eclipse/testbuild/C20140306-1110/NGeP-
biz-fl/build/classes not found.

Total time: 0 seconds
Build failed. Exit value was 1.