Rest 2 sample T test error

Hi everyone, With great help from this forum, I was able to get the first level analsysis done through DPARSF. I am trying to do a two sample T test with 5 patients and 5 controls. I add an age text file as the covariate. I get this error message below.
Thanks for your help in getting past this hurdle.
Yoon-Hee

Read 3D EPI functional images: "C:\Documents and Settings\Administrator\Desktop\CM5Analysis\MdDSResults"...

Image Files in Group 1:
ROI1FCMap_MdDSACrest.img
ROI1FCMap_MdDSDCrest.img
ROI1FCMap_MdDSJC2rest.img
ROI1FCMap_MdDSJNrest.img
ROI1FCMap_MdDSJSrest.img
zROI1FCMap_MdDSACrest.img
zROI1FCMap_MdDSDCrest.img
zROI1FCMap_MdDSJC2rest.img
zROI1FCMap_MdDSJNrest.img
zROI1FCMap_MdDSJSrest.img

Read 3D EPI functional images: "C:\Documents and Settings\Administrator\Desktop\CM5Analysis\CTRLResults"...

Image Files in Group 2:
ROI1FCMap_CTRLCLrest.img
ROI1FCMap_CTRLJWrest.img
ROI1FCMap_CTRLMArest.img
ROI1FCMap_CTRLMKrest.img
ROI1FCMap_CTRLYMrest.img
zROI1FCMap_CTRLCLrest.img
zROI1FCMap_CTRLJWrest.img
zROI1FCMap_CTRLMArest.img
zROI1FCMap_CTRLMKrest.img
zROI1FCMap_CTRLYMrest.img
??? Index exceeds matrix dimensions.

Error in ==> rest_ttest2cov_Image at 55
OtherCovariatesMatrix=[OtherCovariatesMatrix;OtherCovariates{i}];

Error in ==> rest_ttest2cov_gui>btnCompute_Callback at 132
rest_ttest2cov_Image(DependentDirs,OutputName,...

Error in ==> gui_mainfcn at 96
feval(varargin{:});

Error in ==> rest_ttest2cov_gui at 27
gui_mainfcn(gui_State, varargin{:});

??? Error while evaluating uicontrol Callback