[R] problem with R start up MASS and family?

[Jonathan M. Lees]

Dear fellow R-users:

Is this a BUG?

R : Copyright 2004, The R Foundation for Statistical Computing
Version 1.9.1  (2004-06-21), ISBN 3-900051-00-3
 
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Error: object 'family' not found whilst loading namespace 'MASS'
Fatal error: unable to restore saved data in .RData


it goes away if I move .RData to something else and then load it up again.
What gives?
 

 > R.Version()
$platform
[1] "i686-redhat-linux-gnu"
 
$arch
[1] "i686"
 
$os
[1] "linux-gnu"
 
$system
[1] "i686, linux-gnu"
 
$status
[1] ""
 
$major
[1] "1"
 
$minor
[1] "9.1"
 
$year
[1] "2004"
 
$month
[1] "06"
 
$day
[1] "21"
 
$language
[1] "R"
 
 >


-- 
==========================================
Prof. Jonathan M. Lees
Department of Geological Sciences
CB #3315, Mitchell Hall
University of North Carolina
Chapel Hill, NC  27599-3315
(919) 962-0695
FAX (919) 966-4519

jonathan_lees at unc.edu
http://www.unc.edu/~leesj