MAVFTP log download problem

I tried to download my log from Mac FTP after the lastest mission planner update but do not work anymore. Copter firmware 4.0.7.
I reverted back from the update and mav FTP works again.
Any suggestions?
Many thanks

if the file your trying to download the current file ardupilot is logging too?

I can’t even get to this point. On a recent Mac version (1066), if I click the button to download logs, it hangs getting the list of logs to download. If I got to the MavFTP screen the list is displayed.