Dear CCP4 Users, The has been an issue with the CCP4 Update 52 released on 28 Feb 2018.
This will only affect I2-interface users on Windows with there CCP4 installation at version 7.0.052. (The version is shown at the very top of the interface window). To apply new updates you will have to use (only once) the old interface or to type "ccp4um" in CCP4-Console window (the icon should be on your Desktop). Apologies for any inconvenience caused and best wishes Andrey