Apache Commons Configuration Dependency Incompatibility

[Dennis Putnam]

Iam trying to use CompositeConfiguration class from Apache Commons and 
I'm getting a NoClassDefFoundError 
<http://docs.oracle.com/javase/7/docs/api/java/lang/NoClassDefFoundError.html> 
for NestableRunTimeException. In my reading on this problem there are a 
number of references to incompatible dependencies on versions of 
commons-lang. Unfortunately they all reference versions older than what 
I have. I am using commons-configuration-1.9.jar and 
commons-lang3-3.1.jar in my build path. What are the correct versions I 
should be using? TIA.