Webplayer Mac OS quality problems

Hi, i have several issues with the webplayer on MacOs:

1.when I publish the application MacOS Mavericks it looks like it doesm't take into account the quality settings (i set up the "fantastic quality") and I see my scene without any anti-aliasing. In my app there is an option to enable fullscreen and when it's on the quality settings are taken but when I returning to the standard display the quality becomes poor again.

2.It does not work the creation of scene screenshots (following this example: http://answers.unity3d.com/questions/22954/how-to-save-a-picture-take-screenshot-from-a-camer.html) while on WebPlayer for PC is working properly. I did a test with an older version of the Mac OS 10.6 and with this release screenshots work.

The problems with the WebPlayer seem very related to the MacOS version used, I wanted to know if there are any fixes for these problems. I'm using the latest version of Unity and WebPlayer and the latest version of Mavericks, i don't try Yosemite.

I can't give the link of my app because i don't have the permission from the customer.

Thanks in advance!