Error: "Cell contents assignment to a non-cell array object."

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MatLab

K = MENU('Choose a file','Test A','Test V','Test L','Test 1','Test From other DBs');
if K == 1
loop=3
for i=1:loop
string = ['G:\Test\A.tif'];
Rimages{i} = imread(string);

end

elseif K == 2
loop=7
for i=1:loop
string = ['G:\Test\V.tif'];
Rimages{i} = imread(string);
end

elseif K == 3
loop=5
for i=1:loop
string = ['G:\Test\L.tif'];
Rimages{i} = imread(string);
end
elseif K == 4
loop=5
for i=1:loop
string = ['G:\Test\1.tif'];
Rimages{i} = imread(string);
end

elseif K == 5
loop=13
for i=1:loop
string = ['G:\Test\otherdb.tif'];
Final Report - Hand Gesture Recognition using Neural Networks 62
Rimages{i} = imread(string);
end
end
imshow(Rimages{i})

T{i} = imresize(Rimages{i},[126 126]);
figure,imshow(T{i})

After running this program Ihave got error "Cell contents assignment to a non-cell array object."
Can anybody please help me to solve this problem?

[edit]Subject changed to meaningful: please make them descriptive, "please help" is not a lot of use to anyone - OriginalGriff[/edit]