关于Permutation test 的报错

各位老师，您好：

     我在进行Permutation test时MATLAB报错，报错如下：

     Reading images from "F:\FC data\Fun_preprocessdata\adult\control\ROI7\zROI7FCMap_24.nii" etc.

Undefined function 'file2mat' for input arguments of type 'struct'.

Error in file_array/subsref>subfun (line 80)

t = file2mat(sobj,varargin{:});

Error in file_array/subsref (line 60)

    t = subfun(sobj,args{:});

Error in file_array/numeric (line 13)

out = subsref(fa,struct('type','()','subs',{vo}));

Error in file_array/double (line 11)

out = double(numeric(fa));

Error in y_Read (line 71)

    Data = double(Nii.dat);

Error in y_ReadRPI (line 41)

[Data,Header] = y_Read(FileName,VolumeIndex);

Error in y_ReadAll (line 70)

    [Data, VoxelSize, Header] = y_ReadRPI(FileList{1});

Error in y_TTest2_Image (line 40)

    [AllVolume,VoxelSize,theImgFileList, Header] = y_ReadAll(DependentDirs{i});

Error in DPABI_STAT_TOOL>ComputeButton_Callback (line 519)

        y_TTest2_Image(S, OutputName, MaskFile, ImageCell, TextCell, PALMSettings);

Error in gui_mainfcn (line 96)

        feval(varargin{:});

Error in DPABI_STAT_TOOL (line 42)

    gui_mainfcn(gui_State, varargin{:});

Error in @(hObject,eventdata)DPABI_STAT_TOOL('ComputeButton_Callback',hObject,eventdata,guidata(hObject))

Error while evaluating uicontrol Callback

不知道是哪里错了，希望老师能指点一下，谢谢老师！