新手求助 ，编程出错

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function  leizhu= RUSLE(a11,a12,a13,a14,a15,a16,a21,a22,a23,a24,a25,a26,a31,a32,a33,a34,a35,a36,a41,a42,a43,a44,a45,a46,a51,a52,a53,a54,a55,a56,...
                    c10,c11,c12,c13,c20,c21,c22,c23,c30,c31,c32,c33,c40,c41,c42,c43,c50,c51,c52,c53);
A B 为两个矩阵
RUSLE=0;
D=cell(50,1);
E=cell(5,1);
for i=1:50
E{1,1}=a11.*A(i,1)+a12.*A(i,2)+a13.*A(i,3)+a14.*A(i,4)+a15.*A(i,5)+a16.*A(i,6);
E{2,1}=a21.*A(i,1)+a22.*A(i,2)+a23.*A(i,3)+a24.*A(i,4)+a25.*A(i,5)+a26.*A(i,6);
E{3,1}=a31.*A(i,1)+a32.*A(i,2)+a33.*A(i,3)+a34.*A(i,4)+a35.*A(i,5)+a36.*A(i,6);
E{4,1}=a41.*A(i,1)+a42.*A(i,2)+a43.*A(i,3)+a44.*A(i,4)+a45.*A(i,5)+a46.*A(i,6);
E{5,1}=a51.*A(i,1)+a52.*A(i,2)+a53.*A(i,3)+a54.*A(i,4)+a55.*A(i,5)+a56.*A(i,6);
D{i,1}=c10+c11.*E{1,1}+c12.*(2.*E{1,1}.^2-1)+c13.*(4.*E{1,1}.^3-2.*E{1,1}.^2-2.*E{1,1}+1)+...
       c20+c21.*E{2,1}+c22.*(2.*E{2,1}.^2-1)+c23.*(4.*E{2,1}.^3-2.*E{2,1}.^2-2.*E{2,1}+1)+...
       c30+c31.*E{3,1}+c32.*(2.*E{3,1}.^2-1)+c33.*(4.*E{3,1}.^3-2.*E{3,1}.^2-2.*E{3,1}+1)+...
       c40+c41.*E{4,1}+c42.*(2.*E{4,1}.^2-1)+c43.*(4.*E{4,1}.^3-2.*E{4,1}.^2-2.*E{4,1}+1)+...
       c50+c51.*E{5,1}+c52.*(2.*E{5,1}.^2-1)+c53.*(4.*E{5,1}.^3-2.*E{5,1}.^2-2.*E{5,1}+1);
RUSLE=RUSLE+(D{i,1}-B(i,1)).^2
end
想用遗传算法求RUSLE的最小值
出错 One or more output arguments not assigned during call to 'C:\MATLAB7\work\RUSLE.m (RUSLE)'.
请教上边公式写法可对？
感谢大家的帮助