Fatal error: Class 'wsdl' not found - I want use modified version of nusoap for usage of Axis2

Hello,

Thank you for this great module.

I want use http://openmeetings.googlecode.com/svn/trunk/plugins/moodle_plugin/lib/n....

This is a modified version of nusoap for usage of Axis2 for some reason it does not marshall the SOAP Body correct for Axis2 on Linux Platforms

I have this message: Fatal error: Class 'wsdl' not found in sites/all/modules/soapclient/soapclient.module on line 629

thank you in advance for your help

Daniel