R help - Jul 2006 - Help with documentation of a data set

Hi:

I am trying to add a data set in my package but get the following error 
when the package is checked:

	Undocumented data sets:
   	seacarb_test
	All user-level objects in a package should have documentation entries.
	See chapter 'Writing R documentation files' in manual 'Writing R
	Extensions'.

However, I do have a file "seacarb_test.Rd" in the man directory. 
Reading the manual 'Writing R Extensions' did not help.

What am I doing wrong?

Thanks,
jp