On Thu, 2 Aug 2018, Ali Khalid wrote: You can change the language setting under the Tools/Preferences/General menu. If you're looking at gretl in Chinese you will need some help finding this! So here goes: * The Tools menu is the second from the left in the menubar at the top of the main gretl window. * "Preferences" is the first item on this menu. Then "General" is the first item on the sub-menu. Selecting this item opens a dialog box, and the language preference is the first pull-down list (roughly in the middle of the window): pull it down and select "English". Then click "OK" (the rightmost button at the foot of the window). Close the confirmation box that then appears, exit gretl, and re-start. I've seen this sort of thing happen once or twice before on Mac: gretl starts up in an apparently arbitrary language. You might be able to help us debug this. Could you open a Mac terminal window and type echo $LANG (followed by Enter), and let us know what the response is. For example, here on Linux I see: robroy:~$ echo $LANG en_US.UTF-8 Thanks, Allin Cottrell