Dear all, Apologies for reposting this: If anyone could provide some advice or any lead at all it would be very welcome!!! I am getting some error messages which I cannot explain - hopefully you could help. This is a new installation of SPM5 and recent update on a CentOS 64 bit cluster, using MATLAB R2008b. I run sessions connecting with ssh -X from a Linux 9.04 terminal. Preprocessing, design estimation and creation of contrast images have all run smoothly. I estimate the SPM.mat for a two-sample t-test. I open Results to define contrasts (for group comparisons). I get the following message when I try to define a legitimate T-contrast: +++++++++++++++++++++++++++++++++++++++++++++++++ SPM5: spm_results_ui (v$Rev: 1776 $) 21:24:34 - 18/05/2009 ========================================================== ============== ??? Error using ==> mrdivide Matrix dimensions must agree. Error in ==> spm_conman at 1121 h = image((xCon(i).c'/max(abs(xCon(i).c(:)))+1)*32); Error in ==> spm_conman at 1692 spm_conman('GraphCons',DxCon,-1,F) %-Depict contrast ??? Error using ==> waitfor Error while evaluating uicontrol Callback ++++++++++++++++++++++++++++++++++++++++++++ Then, when I try to run an F-contrast, I get this error: ++++++++++++++++++++++++++++++++++++++++++++++++ ESS image 1 : ??? Maximum recursion limit of 500 reached. Use set(0,'RecursionLimit',N) to change the limit. Be aware that exceeding your available stack space can crash MATLAB and/or your computer. Error in ==> spm_create_image ??? Error while evaluating uicontrol Callback I hope someone could help me! Many thanks for your time! Yannis Yannis Paloyelis, MSc PhD student MRC SGDP Centre Institute of Psychiatry King's College London De Crespigny Park (P080) London SE5 8AF tel: +44 (0)20 7848 5403 fax: +44 (0)20 7848 0866