<div> Hi,Gate users ! I get three problems after I run the examples given by Gate. Take SPECT.mac for example ,the problems is 1 It never runs to the end automatically . It  always  tells  "Time set to (s) 600 G4PhysicalVolumeModel::Validate() called.   Volume of the same name and copy number ("world_P", copy 0) still exists and is being used.   WARNING: This does not necessarily guarantee it's the same   volume you originally specified in /vis/scene/add/. G4PhysicalVolumeModel::Validate() called.   Volume of the same name and copy number ("world_P", copy 0) still exists and is being used.   WARNING: This does not necessarily guarantee it's the same   volume you originally specified in /vis/scene/add/. G4PhysicalVolumeModel::Validate() called.   Volume of the same name and copy number ("world_P", copy 0) still exists and is being used.   WARNING: This does not necessarily guarantee it's the same   volume you originally specified in /vis/scene/add/. G4PhysicalVolumeModel::Validate() called.   Volume of the same name and copy number ("world_P", copy 0) still exists and is being used.   WARNING: This does not necessarily guarantee it's the same   volume you originally specified in /vis/scene/add/. G4PhysicalVolumeModel::Validate() called.   Volume of the same name and copy number ("world_P", copy 0) still exists and is being used.   WARNING: This does not necessarily guarantee it's the same   volume you originally specified in /vis/scene/add/. G4PhysicalVolumeModel::Validate() called.   Volume of the same name and copy number ("world_P", copy 0) still exists and is being used.   WARNING: This does not necessarily guarantee it's the same   volume you originally specified in /vis/scene/add/. G4PhysicalVolumeModel::Validate() called.   Volume of the same name and copy number ("world_P", copy 0) still exists and is being used.   WARNING: This does not necessarily guarantee it's the same   volume you originally specified in /vis/scene/add/. G4PhysicalVolumeModel::Validate() called.   Volume of the same name and copy number ("world_P", copy 0) still exists and is being used.   WARNING: This does not necessarily guarantee it's the same   volume you originally specified in /vis/scene/add/. G4PhysicalVolumeModel::Validate() called.   Volume of the same name and copy number ("world_P", copy 0) still exists and is being used.   WARNING: This does not necessarily guarantee it's the same   volume you originally specified in /vis/scene/add/. unexpected character after line continuation character *** G4Exception: Aborting execution *** Abort "                         So ,it has no output files . However , I can use another way to input the rest of  macros by myself, so it has outputs . But I wonder why it never runs to the end . 2  The userguide says "   The ROOT Object Browser when opening the GATE output file, containing : 4 histograms and 4 trees (GATE, COINCIDENCES, HITS and SINGLES) in which several variables are stored ." But mine have no coincidences . Besides that , when I enter /gate/output/root/setRootCoincidencesFlag 0 , it tells command not find . When install Gate ,I follow the installationGuide ,so I don't know the reason . 3  Who  can  tell  me the root macros which can open Gate out files .How can I see or analysis the data in file.root ?                    Waiting for your answers ! Thank you very much ! </div>  <hr/> <a href="http://email.163.com">网易邮箱，中国第一大电子邮件服务商</a>