I am new to primefaces and trying to implement the primefaces extensions.
As per the guide I have added the following jars to my buildpath:
1) commons-lang3-3.1.jar
2) gson-2.3.
This is caused by using a wrong combination of PF and PFE... With PF5, you can only use PFE 2.0/2.1.Searching in google for the error in the stacktrace would have told you so