Memory Error doing anything in DPARSF

Hello, I am analyzing fMRI NIFTI data that has already been converted by SPM on a Windows machine. I'm getting an 'out of memory' error when I try to do anything, along with some other errors I don't understand. This computer has a decent amount of RAM (1.5 GB), I've tried closing all other programs, and tried 3 GB mode. Any idea what is going wrong? Whenever I try to do any sort of scan in DPARSF I get this error in the Matlab feed: Read 3D EPI functional images: "E:\BC study\Paul\FunImgNormalizedSmoothed\Control_205".??? Out of memory. Type HELP MEMORY for your options. Error in ==> repmat at 88 B = A(subs{:}); Error in ==> rest_to4d at 67 AllVolume =repmat(AllVolume, [1,1,1, size(ImgFileList,1)]); Error in ==> rest_detrend at 23 [AllVolume,VoxelSize,theImgFileList, Header] =rest_to4d(ADataDir); Error in ==> DPARSF_run at 708 rest_detrend([AutoDataProcessParameter.DataProcessDir,filesep,FunImgDir,filesep,AutoDataProcessParameter.SubjectID{i}], '_detrend'); Error in ==> DPARSF>pushbuttonRun_Callback at 938 [Error]=DPARSF_run(handles.Cfg); Error in ==> gui_mainfcn at 95 feval(varargin{:}); Error in ==> DPARSF at 40 gui_mainfcn(gui_State, varargin{:}); ??? Error using ==> DPARSF('pushbuttonRun_Callback',gcbo,[],guidata(gcbo)) Out of memory. Type HELP MEMORY for your options. ??? Error while evaluating uicontrol Callback Thanks, Paul