java.lang.ClassNotFoundException: jxl.biff.FontRecord -- Loader Info -- ClassLoader name

hi experts,

Im using jxl jar file in my dc AAA, on deploying the dc and running the application im getting the below error

java.lang.ClassNotFoundException: jxl.biff.FontRecord ------------------------- Loader Info ------------------------- ClassLoader name: etc.....

The jar file is added to external lib dc , and im using this external lib dc as used dcs in AAA, while building hte dc AAA no errors are found , it is getting builded properly and after deploying and running im getting the above error.

Regards

Govardan