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Post: mathematica connection failure - "Error:Could not initialize class org.voltcore.utils"

mathematica connection failure - "Error:Could not initialize class org.voltcore.utils"
jcm
Jun 21, 2013
running ubuntu 12.04, pentium i7, 64 gb ram, 2tb hd

downloaded volt and successfully installed, initiated and tested 'voters' database example, sqlcmd, sqladmin.

Mathematica 9.0.1 is installed on the same machine and will connect, at least for now, on localhost

sucessfully added voltdbclient-3.3.0.1.jar to the Mathematica class path:
"/usr/local/Wolfram/Mathematica/9.0.1/SystemFiles/Links/DatabaseLink/\
Java/voltdbclient-3.3.0.1.jar"

sucessfully installed the driver :
JDBCDriver["Name" -> "volt", "Description" -> "",
"Driver" -> "org.voltdb.jdbc.Driver", "Protocol" -> "jdbc:voltdb://",
"Version" -> 2.,
"Location" -> "/home/pg/.Mathematica/DatabaseResources/volt.m"]

connecting to volt 'voter' database example as localhost:21212 at the test I get
"Error:Could not initialize class org.voltcore.utils"

What does this mean and how do I fix it?
Thanks in advance. Jonathan Miller