Dear all, It's long story: At beginning, I have phenix installed. I do not have CCP4 installed. Then I run "phenix.phaser params.eff" to call phenix run phaser from script params.eff. It works well. Then, I installed CCP4 with its own phaser inside. Then I run again "phenix.phaser params.eff". The computer start to import files (should be some libraries and supporting files, not input data) from CCP4 installation directory. It seems so strange for me. And because some of the .so files in CCP4 directory are for 32bit, phenix.phaser gave me error message: wrong ELF class: ELFCLASS32 and refused to keep running. I guess I could solve this problem by copying the same .so file in phenix directory into CCP4's directory. What I really want to know is why this happen. Is that the installation of CCP4 changed some kinds of PATH variables for phenix? How could I fix by giving a right path again? I would appreciate to any help. Thanks a lot guys! Best regards, GP