Hi Kshatresh, Although we are aware of problems calculating some surfaces, this sounds like a different problem because the others would not stop Chimera, and they only happen for some fraction of structures, not all the time as you suggest. Your problem is more likely with the graphics driver on your machine. It is better to use "Help... Report a Bug" in the Chimera menu to report these problems (not sending mail to chimera- users@cgl.ucsf.edu), because that would send us details about your machine. However, some things you could try are - updating your graphics driver - in Chimera, set Preferences (under Favorites), General category, "Debug OpenGL on startup" to "true", click Save. Exit Chimera and restart, and then in the debug dialog, turn off "VertexBufferObject" Although it doesn't sound like you are having the other surface problems I mentioned, they and some workarounds are discussed here: <http://www.cgl.ucsf.edu/pipermail/chimera-users/2010-January/004713.html
I hope this helps, Elaine ----- Elaine C. Meng, Ph.D. UCSF Computer Graphics Lab (Chimera team) and Babbitt Lab Department of Pharmaceutical Chemistry University of California, San Francisco On Mar 31, 2010, at 4:18 AM, Kshatresh Dutta Dubey wrote:
Dear All, I am using chimera 1.41 and 1.4 on a 3 GB Core 2 duo machine. When i draw surface for any ligand or residue then suddenly it get closed. This problem occurs in both versions 1.4 and 1.4.1. Kindly suggest me to fix this problem. Regards Kshatresh Dutta Dubey