Hi Francesco, This is a bug in all versions of Chimera. We are going to push out a version with a fix (1.5.2) as quickly as possible and will have a fuller announcement about it either today or tomorrow. --Eric Eric Pettersen UCSF Computer Graphics Lab http://www.cgl.ucsf.edu On Jan 24, 2011, at 11:28 PM, Francesco Pietra wrote:

I have replaced previous installation of CHIMERA with chimera alpha version 1.6 (build 32272) 2011-01-06 08:36:33 GMT. I have attempted to register at the request but the answer is that no regular installation is seen. So, at any start I have to kill the request.