Julie, I have run SPM5 and SPM8b successfully on MATLAB R2008a and R2008a_64 on both an Intel iMac and Intel Mac Pro. With the 32 bit Intel versions, the compiled mex files supplied with SPM are good. If you want to run 64-bit MATLAB (recommended, since for whatever reason, the 32 bit version is VERY slow compared to linux and Windows versions), then you will need to compile the mex files for your system, which is not difficult. Best, Don __________________ Don C. Rojas, Ph.D. Associate Professor of Psychiatry and Neuroscience Director, Magnetoencephalography Laboratory University of Colorado Denver, USA Please note: My email address has changed from [log in to unmask] to [log in to unmask] Please update your records. On 3/23/09 10:42 AM, "Julie McEntee" <[log in to unmask]> wrote: Hello List, I have been running SPM5 on a PC (Windows XP 2002) with MATLAB 7.0, but want to switch to a Mac. I have acquired a Mac OS X Version 10.4.11 with a 2 x 3 GHz Dual-Core Intel Xeon processor and 8 GB 667 MHz DDR2 FB-DIMM memory. It is my understanding, from the MathWorks website, that versions of MATLAB released with R2006b (MATLAB 7.3) or earlier releases are not supported on Intel-based Macs. Also, the SPM website indicates that versions of MATLAB after 7.1 were written after the release of SPM5 and cannot predict how well it will run in these. Has anyone had success in running SPM5 on Intel-based Macs and what version(s) of MATLAB are you using? Thanks for any help/suggestions, Julie Julie E. McEntee, MA, CCRP Senior Research Program Coordinator Department of Psychiatry- Neuroimaging Johns Hopkins University School of Medicine 600 N. Wolfe St./Phipps 300 Baltimore, MD 21287 Phone: 410-502-0468 Fax: 410-614-3676