Hi all, We have put out a 1.6.1 release which, along with some minor fixes, corrects these problems: - Graphics would be corrupted or chimera would crash on recent versions of Linux, e.g., Ubuntu 11.10 and Fedora 16 - Planes (of Axes/Planes/Centroids tool) failed to start - Inappropriate "file types" (e.g. PDB ID) included in the file-type list of the main File→Open dialog - Very old sessions (pre-2006) would not restore on 64-bit Windows Please download 1.6.1 if these problems are affecting you. --Eric Eric Pettersen UCSF Computer Graphics Lab http://www.cgl.ucsf.edu