[R] attach() warning message

[J.M. Breiwick]

Hi,

I am using R 2.3.0 and my .First() file has the following line which causes 
a warning:
attach(what="c:/r/jmb/.RData", pos=3)

I get the following message after .First() is loaded:

During startup - Warning message:
use of NULL environment is deprecated

Is there a simple fix that will eliminate this warning message? Thanks.

J. Breiwick