<div dir="ltr">Dear Gate-users,   I have the same problem with Davi Francois <<a href="mailto:davifrancois@hotmail.com">davifrancois@hotmail.com</a>> raised on 1/31 2008, but the solution didn't be provided. The /gate/output/root doesn't exist when I tried to change into the directory. The ROOT package was installed successfully and activated smoothly in the tcsh. It means my root env variables correct, doesn't it? In addition, G4ANALYSIS_USE_ROOT is active by setenv ROOTSYS in the env_gate.csh; therefore, root output is enable. However, after Gate installation, this command /gate/output/root/... still can't be found! Could you please give me suggestion or clue to solve it?   My Gate condition:   Gate_v4.0.0   clhep-2.0.3.2   geant4.9.1.p02   root_v5.20.00   lmf_v3.0   I attach my env variable setting for reference. Thanks very much! James -- James, Chih-Chieh Liu <a href="mailto:jjliu6@gmail.com">jjliu6@gmail.com</a> Nation Tsing Hua University, Taiwan </div>