Hello, I am using marsbar and trying to pull time course from individual sessions. I am using voxel defined ROI's. When the program begins to run it seems to get through part of the analysis then reads out this infomation... Mapping files : ...done Calculating globals : ...done Fetching data : 2/5 ??? Outp ut argument "vXYZ" (and maybe others) not assigned during call to "/home/apps/sp [log in to unmask] (getdata)". Error in ==> maroi.getdata at 30 if nargin < 2 Error in ==> maroi.get_marsy at 76 [y vals vXYZ mat] = getdata(o, VY); Error in ==> marsbar at 975 marsY = get_marsy(o{:}, VY, sumfunc, 'v'); Error in ==> spm at 831 evalin('base',CBs{v-1}) ??? Error using ==> spm('PopUpCB',gcbo) Output argument "vXYZ" (and maybe others) not assigned during call to "/home/app [log in to unmask] (getdata)". ??? Error while evaluating uicontrol Callback Any ideas what could be going on here? Best, Ben Pruce -- Benjamin Pruce Psychological and Brain Sciences Indiana University Bloomington, IN 47401