Hi, 

I am having the same problem using SPM preprocessed data. 

Mapping files for session 1...: ...done
Calculating globals...: 1/1...done
Session 1 global statistics - mean: 1624.9480 stdv: 1.0000

Statistics of movement data:

x y z pitch roll yaw norm
mean 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
stdv 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
max 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

Error using cat
CAT arguments dimensions are not consistent.

Error in art>savefile_Callback_SaveRegressor (line 1371)
R2=cat(2,R1,M{j});
Error in art>art_OpeningFcn (line 525)
savefile_Callback_SaveRegressor(handles);
Error in gui_mainfcn (line 221)
feval(gui_State.gui_OpeningFcn, gui_hFigure, [], guidata(gui_hFigure), varargin{:});
Error in art (line 131)
gui_mainfcn(gui_State, varargin{:});


I have checked my files for any mix matching in dimensions and everything looks fine (functional: 4x4x193, movement parameters 6x193) 

I also tried running more than one, as suggested and this didn't solve the problem. 

Any other ideas? 
Where any of your able to get past this error? 

Thanks, 


Lindsay