R 2.0.1 jpeg() png() pdf() Mac OSX 10.3.5 - empty files being created

Hi everyone,

I've been opening up R 2.0.1 from the dock and then starting the Mac OSX
X11 server.

After that I call

jpeg("test.jpg",plot(rnorm(10)))

and r pops up a quartz window with the appropriate graph in it and puts a
file called test.jpg into the HOME which is 0kb in size and is completely
empty.

There is no error message.

I've tried

png("test.png", plot(rnorm(10)))

and

pdf(plot(rnorm(10)))

with the same result.

I'm sure that I've got the appropriate libpng and jpeg libraries installed
correctly from sourceforge as linked to by http://www.economia.unimi.it/R/

Thanks in advance
Yours

Jin Kee