ZK - Open Source Ajax Java Framework

hi,
i got a problem with the datatypes.dtd in zkcommon package i have created zk-src project in eclipse.
datatypes.dtd why this file required and i have got error for this statement <!ELEMENT %simpleType;
((%annotation;)?, (%restriction; | %list; | %union;))>
whats wrong in this statement or do i require some jar file to add my project.

plz help me only one error remaining :)
tahnks in advannce

vijay

do you add zcommon.jar to your project ??

yes i have. till error is there is any dependency betn zhtml,zk,zul,...?

i have the same problem , did u fix it ?

@ eslamerman
To clarify the problem you encountered, let me ask you few problem:
What version of ZK src are you developing?
And what doc are you following to develop ZK src?