CLAVIN compile error on Ubuntu 12.04

CLAVIN_MVN Error

[WARNING] 
java.lang.ClassNotFoundException: com.bericotech.clavin.index.IndexDirectoryBuilder
	at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
	at org.codehaus.mojo.exec.ExecJavaMojo$1.run(ExecJavaMojo.java:285)
	at java.lang.Thread.run(Thread.java:679)
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 39.885s
[INFO] Finished at: Wed Oct 23 02:17:25 UTC 2013
[INFO] Final Memory: 10M/25M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.2.1:java (default-cli) on project clavin: An exception occured while executing the Java class. com.bericotech.clavin.index.IndexDirectoryBuilder -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException