Thread Subject: How??

Hi guys,
I am a newbie trying to get my head round matlab for my project. Here i am trying to train a feedforward Neural net that takes a binary image, i set the target as stated below but when i call the train function it displays the error message..

??? Error using ==> network.train at 146
Targets are incorrectly sized for network.
Matrix must have 1 columns.

here is my tiny implimentation. please kindly tell me what i am doing wrong or what i should do.

img=imread('1000001.png'); %160-by-120 binary image size(basically just black and white)
target1 = [0 0 0 0 0 1 0 0 0 0 0];
ims = double(img);
[r, c] = size(img);

im = reshape(ims, r*c, 1);

nets = newff(im,target1, 10);

net = train(nets, im, target1);