Thank you for your reply, jllort. It does the version issue. I have installed openKM 6.3 on machine B, while the source (machine A) is based on openKM 6.2.4 and update to 6.3. My steps solving this problem: step 1: Downgrade openKM from 6.3 to 6.2.4. Make a backup!!! Stop Tomcat Edit OpenKM.cfg and ...