When trying to build an Ivy project that tries to publish artifacts to Artifactory, the build fails with the error below. Deselecting "Publish to Artifactory" allows the build to complete successfully. The config.xml for the job is attached. Please let me know if you need any more information.

[workspace] $ cmd.exe /C '"C:\Users\Public\.hudson\tools\1.7.0\bin\ant.bat -lib C:/Users/Public/.hudson/plugins/artifactory/WEB-INF/lib -listener org.jfrog.build.extractor.listener.ArtifactoryBuildListener clean dist && exit %%ERRORLEVEL%%"'
[URLClassLoader@17fa65e] warning at org\jfrog\build\config\ArtifactoryIvySettingsConfigurator.java::0 no match for this type name: org.apache.ivy.Ivy [Xlint:invalidAbsoluteTypeName]
Buildfile: build.xml

BUILD FAILED
java.lang.NoClassDefFoundError: org/apache/ivy/core/IvyContext
at org.jfrog.build.extractor.listener.ArtifactoryBuildListener.buildStarted(ArtifactoryBuildListener.java:41)
at org.apache.tools.ant.Project.fireBuildStarted(Project.java:1991)
at org.apache.tools.ant.Main.runBuild(Main.java:646)
at org.apache.tools.ant.Main.startAnt(Main.java:199)
at org.apache.tools.ant.launch.Launcher.run(Launcher.java:257)
at org.apache.tools.ant.launch.Launcher.main(Launcher.java:104)
Caused by: java.lang.ClassNotFoundException: org.apache.ivy.core.IvyContext
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
... 6 more

Total time: 0 seconds
java.lang.NoClassDefFoundError: org/apache/ivy/core/IvyContext
at org.jfrog.build.extractor.listener.ArtifactoryBuildListener.buildStarted(ArtifactoryBuildListener.java:41)
at org.apache.tools.ant.Project.fireBuildStarted(Project.java:1991)
at org.apache.tools.ant.Main.runBuild(Main.java:646)
at org.apache.tools.ant.Main.startAnt(Main.java:199)
at org.apache.tools.ant.launch.Launcher.run(Launcher.java:257)
at org.apache.tools.ant.launch.Launcher.main(Launcher.java:104)
Caused by: java.lang.ClassNotFoundException: org.apache.ivy.core.IvyContext
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
... 6 more
org/apache/ivy/core/IvyContext