_objc_setProperty ObjC2.0 compile error ?

FROM : Charles Hamel
DATE : Tue Nov 13 21:35:07 2007

Hi

I have a slight problem compiling a project in XCode 3 under Leopard. 
I have converted some of my classes to ObjC2.0 and have used the 
@property and @synthetize compiler "macros". Now I am unable to 
compile, compiler says:

  "_objc_setProperty", referenced from:

Followed by a list of all the attributes in question.

I have looked on Google and in the Doc but not a single hit, what am I 
missing ?

Thank you!

Charles