mac won't open stl in cura with double click

[manostkd 0]

Hi, I'm new to this forum, I downloaded Cura 4.3.0, and all though i'm happy with the slicing i cannot open stl files directly on my mac when I doubleclick them. I tried to change through the info tag and change all to open with cura, but it still doesn't work. I use to work with repetier and I did not have that problem.
But this is a definitely better software, all though this glitch is so annoying.
Also the files do not get the cura logo.
Can you help?

kind regards

[eldrick 65]

Right-click any STL file and choose Get Info. On the info panel note the "Open with:" item halfway down – choose Cura, then click Change All button. Done. 

[manostkd 0]

i did that, but usually the files get the extension image. but in this case they didn't. they open now, but teir aspect is still not a cura one... same as the gcode. why don't they get the cura logo? is that a plugin issue? I mean the gcode is generated by cura itself. here's a screenshot of the files stl, and gcode.