Problem in calling method from Struts.xml in struts2

[ashish chawre]

Hi list,

I am trying to call execute method of my UserRegistrationAction class but it
doesn't call the method.
Here is the code of my struts.xml :

<struts>
    <constant name="struts.enable.DynamicMethodInvocation" value="false"/>
    <constant name="struts.devMode" value="false"/>

    <package name="company" extends="tiles-default">
        <action name="d_*" class="com.company.action.{1}" method="input">
            <result type="tiles">{1}</result>
            <result name="input" type="tiles">{1}</result>
        </action>
        <action name="LoginAction" class="com.company.action.LoginAction"
method="execute">
            <result type="redirect">d_UserRegistrationAction</result>
            <result name="input" type="tiles">LoginAction</result>
        </action>
        <action name="UserRegistrationAction"
class="com.company.action.UserRegistrationAction" method="execute">
            <result type="tiles">d_UserListAction</result>
            <result name="input" type="tiles">d_UserListAction</result>
        </action>
    </package>
</struts>

In above code when I am calling execute for LoginAction action its working
fine but when I do the same for UserRegistrationAction, the execute method
of this class is not getting called instead its giving error
*java.lang.NoSuchMethodError:
com.company.delegate.UserDelegate.add(Lcom/blisstech/dto/UserDTO;)J
com.company.action.UserRegistrationAction.execute(UserRegistrationAction.java:175)
*

Any help will be much appreciated.

Thanks in advance.

-- Ashish