I have a little problem with /toolbar command

so, if I use this command /toolbar -a sometext Name images\example.ico /bubu works geat!
But if I use an ICL file for the icon it doesn't work

/toolbar -an2 sometext Name images\example.icl /bubu

I'm using -n options
-nN = icon index in picfile

Why it doesn't work?

PS: In windows XP works, in windows 7 doesn't work... Bug? Or what is it?