I have been installing and using SuiteCRM since the inception and do not understand this. I installed the current version and setup a new instance with new DB.
All modules are fine except for the Administration Section. All screens are doing the same, displaying the ‘LBL_USERS_TITLE’ not the value of the title.
I found a partial answer. Some file / directory in the install needs different permissions. I tried setting all to 777 and that fixed the issue. I used the installation instructions to set the permissions so I think there is an additional file that needs to be added to the list.