hello everybody.

Could you help me with one moment.
When I add framework <CoreServices/CoreServices.h> in my iPhone project and in .h file,
next can't run application.
There are some errors, for example:

// Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator3.0.sdk/System/Library/
// Frameworks/CoreServices.framework/Frameworks/WebServicesCore.framework/Headers/WSMethodInvocation.h:759:
// error: expected declaration specifiers or '...' before 'CFXMLTreeRef'

Can someone help?
Thanks.