[R] Bus error with xyplot

[Giovanni Petris]

Has anybody else experienced something like the example below? 
Any clues about where I could start looking?

Thank you in advance,
Giovanni 


> version
         _                   
platform sparc-sun-solaris2.7
arch     sparc               
os       solaris2.7          
system   sparc, solaris2.7   
status                       
major    1                   
minor    6.2                 
year     2003                
month    01                  
day      10                  
language R                   
> library(lattice)
> example(xyplot)

xyplot> data(quakes)

xyplot> Depth <- equal.count(quakes$depth, number = 8, overlap = 0.1)

xyplot> xyplot(lat ~ long | Depth, data = quakes)
Bus error

-- 

 __________________________________________________
[                                                  ]
[ Giovanni Petris                 GPetris at uark.edu ]
[ Department of Mathematical Sciences              ]
[ University of Arkansas - Fayetteville, AR 72701  ]
[ Ph: (479) 575-6324, 575-8630 (fax)               ]
[ http://definetti.uark.edu/~gpetris/              ]
[__________________________________________________]