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java.lang.ClassNotFoundException: org.gjt.mm.mysql.Driver

I have created a very simple job - a t_MSSqlInput, a tMap and a tMySQLOutput. The Input and Output controls both set to repository and connect correctly from the IDE. When I attempt to run the job I receive the following error:
Exception in component tMysqlOutput_1
java.lang.ClassNotFoundException: org.gjt.mm.mysql.Driver
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:169)
at ecrm_to_sugar.accounts.Accounts.tMSSqlInput_1Process(Accounts.java:593)
at ecrm_to_sugar.accounts.Accounts.runJobInTOS(Accounts.java:3780)
at ecrm_to_sugar.accounts.Accounts.main(Accounts.java:3696)
Any help would be appreciated,
Thanks