[R] Warning: X11 protocol error: BadWindow (invalid Window parameter)

[Korponai János]

Hi all,
I've got this using Rcmdr package only.
R-cmdr> scatterplot.matrix(~PC1+PC2+PC3+PC4 | Species, 
reg.line=FALSE, smooth=FALSE, span=0.5, diagonal= 'density', 
by.groups=TRUE, data=iris)
Warning: X11 protocol error: BadWindow (invalid Window parameter)
Warning: X11 protocol error: BadWindow (invalid Window parameter)
Warning: X11 protocol error: BadWindow (invalid Window parameter)
Warning: X11 protocol error: BadWindow (invalid Window parameter)
Warning: X11 protocol error: BadWindow (invalid Window parameter)
Warning: X11 protocol error: BadWindow (invalid Window parameter)
Warning: X11 protocol error: BadWindow (invalid Window parameter)
Warning: X11 protocol error: BadWindow (invalid Window parameter)
Warning: X11 protocol error: BadWindow (invalid Window parameter)
Warning: X11 protocol error: BadWindow (invalid Window parameter)
Warning: X11 protocol error: BadWindow (invalid Window parameter)
Warning: X11 protocol error: BadWindow (invalid Window parameter)
Warning: X11 protocol error: BadWindow (invalid Window parameter)

What's this? The plot is shown.

Thanks

> version
         _
platform i386-pc-linux-gnu
arch     i386
os       linux-gnu
system   i386, linux-gnu
status   Under development (unstable)
major    1
minor    8.0
year     2003
month    09
day      06
language R

-- 
Dr. Janos Korponai
West-Transdanubian District Water Authority, Dept. Kis-Balaton
H-8360 Keszthely, Csik F. str. 1, Hungary
e-mail: korponai.janos at nyuduvizig.hu