Are there any issues with the current Mac version of Chimera (1.6.2) and Mac OS 10.8 (Mountain Lion)? Also, for a MacBook Pro (latest version) should one be using 32 or 64 bit version of Chimera. Thanks, Jack John E. Johnson Elden R. Strahm Professor of Structural Virology PHONE 858-784-9705 Department of Molecular Biology, MB31 FAX 858-784 -8660 The Scripps Research Institute EMAIL jackj@scripps.edu<mailto:jackj@scripps.edu> 10550 N. Torrey Pines Rd. La Jolla, CA 92037 http://johnsonlab.scripps.edu/ Virus Partcle ExploreR (VIPER) http://viperdb.scripps.edu/ ******************************************************************************** Olive Ireland PHONE 858-784-2947 Administrative Assistant EMAIL ireland@scripps.edu<mailto:ireland@scripps.edu>