Question: I have the function which I run well in Maple V but in maple 15 .It's wrong

I have the function which I run well in Maple V
but in maple 15 .It's wrong. How can it be? and please help me to edit it.

for i from 0 to 15 do
t:=1+i/16;
p.i:=plot(sin(x*t),x=-10..10,axes=none):
od:
display(array(1..4,1..4,[[p0,p1,p2,p3],[p4,p5,p6,p7],
[p8,p9,p10,p11],[p12,p13,p14,p15]]));

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