Printing multiple page pdfs from a TCanvas in batch mode

I am writing multiple page pdfs from a TCanvas. It works fine on my local machine, but when I run it from a remote machine in batch mode (because it doesn’t have a display), all but the first page of the resulting pdf turn out blank.

The relevant part of the code looks something like this:

c = new TCanvas("c","",200, 50, 550, 550);
c -> Print("fname.pdf[");
for ( i = 0; i < 16; i++ ) {
	for ( j = 0; j < 4; j++) {
		c -> cd( j+1 );
		hs[4*i + j]->Draw("lego2");
	c -> Print("fname.pdf");
c -> Print("fname.pdf]");

I’ve observed this both when the hs are TH1Ds and when the hs are TH2Is. As I said, it works on my local machine, so I think the problem is batch mode. Does anyone know why this is or how to fix it?

what about replacing [ and ] by ( and ) ?
Which ROOT version ?
is it ok on your local machine in batch mode ?