[flexcoders] FDS not able to convert arraycollection to list

[gur_sukh]

I get following error when i try to send an arrayCollection through 
spring 

[2008.03.21 23:06:09.180][WARN ][istener0-0][Price-Discount-
Engine    ][      ServletHandler.java:  589] -
 /service/httpinvocation/admin/AdjustmentService: 

java.lang.ClassNotFoundException: flex.messaging.io.ArrayCollection

      at java.net.URLClassLoader$1.run(URLClassLoader.java:200)

      at java.security.AccessController.doPrivileged(Native Method)

      at java.net.URLClassLoader.findClass(URLClassLoader.java:188)

      at java.lang.ClassLoader.loadClass(ClassLoader.java:306)

      at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268)

      at java.lang.ClassLoader.loadClass(ClassLoader.java:251)

      at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)

      at java.lang.Class.forName0(Native Method)

      at java.lang.Class.forName(Class.java:242)

      at java.io.ObjectInputStream.resolveClass
(ObjectInputStream.java:574)

      at 
org.springframework.remoting.rmi.CodebaseAwareObjectInputStream.resolv
eClass(CodebaseAwareObjectInputStream.java:103)