DPARSFA Error after normalizing

Hi everyone

I'm preprocessing my data and have encountered an error message. It seems to happen right after the normalizing step and the matlab command window says that normalization is "Done" (however, there is no "W"-folder available in my directory, which is strange). This is what the error message looks like:

Extracting ROI signals...
     Read 3D EPI functional images: "/disk2/cognitive/Eva/RestingState/FunImgAR/HPS_2053".
Error using rest_spm_slice_vol
Cant open image file.

Error in rest_spm_read_vols (line 34)
    Y(:,:,p,i) = rest_spm_slice_vol(V(i),rest_spm_matrix([0 0 p]),V(i).dim(1:2),0);

Error in rest_ReadNiftiImage (line 110)
        Data = rest_spm_read_vols(V);

Error in rest_readfile (line 71)
            [Outdata,Header]= rest_ReadNiftiImage(hname,volumeIndex);

Error in y_ExtractROISignal (line 177)
            MaskROI=rest_readfile(ROIDef{iROI});

Error in DPARSFA_run>(parfor body) (line 2111)
                y_ExtractROISignal([AutoDataProcessParameter.DataProcessDir,filesep,FunSessionPrefixSet{iFunSession},AutoDataProcessParameter.StartingDirName,filesep,AutoDataProcessParameter.SubjectI
                Error in parallel_function (line 466)
            F(base, limit);

Error in DPARSFA_run (line 2012)
        parfor i=1:AutoDataProcessParameter.SubjectNum

Error in DPARSFA>pushbuttonRun_Callback (line 1601)
    [Error]=DPARSFA_run(handles.Cfg);

Error in gui_mainfcn (line 96)
        feval(varargin{:});

Error in DPARSFA (line 33)
    gui_mainfcn(gui_State, varargin{:});
 
Error while evaluating uicontrol Callback

Any help would be deeply appreciated!

/evast001