Mac Users Read This!!

Okay, this is odd, but it solved the Mac hi-rez snapshot screen freeze for me (your experiences may vary).

Use the normal snapshot window, rather than CTRL + (tilde). In the "what image size do you need?" section, go to Custom, then type in the dimensions you want (e.g. if your SL window is 1,667 x 1,002, like mine is on a 21" monitor, double that to 3,334 x 2,004 -- remember to double both dimensions or you'll get a distorted image.) THEN -- AND THIS IS THE REALLY, REALLY, IMPORTANT PART -- Un-check "constrain proportions."

If your experience is like mine, when you hit Refresh, your screen image will hop around five or six times almost as if it's sampling the various quadrants of the image, then settle back to your original crop. Hitting save will then save to disk without a hitch.

The hopping around thing is a bit weird, but non-damaging a far as I can tell and the save to disk takes less than a second (so maybe the hopping saves time, who knows?).

All I know is that now I can take hi-rez pics without crashing. /happy sigh

(This solution was provided by Andrew at Linden Lab support, thank you Andrew!)

.. perfectly on y macbook pro with a 8600 MGT.
Thank you very much for the trick!

I found another solution. I had not been having the hi-rez snapshot problem at all, even though I had been taking a lot of hi-rez snaps lately.

Then it suddenly happened: I snapped and crashed. Every time.

I thought back to any changes I had made and could only remember one: I had resized the SL client window, making it smaller. (Like others have reported, resizing it after logging in to SL locks up my Mac. But it can be resized while the login screen is showing.)

Today before logging in, I clicked the green resize window button, maximizing the SL client window. And it fixed the hi-rez problem for me.