The ‘IUCr’ button in enCIFer no longer allows me to paste the location of a CIF into a file name box on the checkCIF web page

• instead, press the button "Browse..." or "Choose File..."
• then in the file dialog, paste into the file name box
• either by right clicking and choosing paste, or using CTRL-V (windows) or Command-V (mac)

This is necessary as most web browsers no longer allow the direct pasting of file names, as a security precaution