Grasshopper display error

Hi, I’m trying to learn Grasshopper but I’m failing at my first attempt. The Grasshopper window is not displaying like it should be displayed, and the tool bar is disappearing.

Does someone knows why is this happening?

Has it happened to anyone else?
Could it be fixed?

Hi Ana Lorena-

I see you are running OS X 10.9.5 - a version of OS X (now called “macOS”) that is now 4 years old. We do not think we will be able to get Grasshopper for Mac to work on any version of macOS before OS X El Capitan (10.11). Please update to the latest version of macOS - free and relatively easy - and the issue you are seeing should go away.