I've been struggling for about 5 months on an intermittent issue with my a99ii. Seemingly at random, though slightly more often at higher temperatures and after several hours of use, my a99ii will get "stuck" writing an image to the card. I can continue to trigger the shutter, however nothing is being written to the card after the snag. I don't notice until I take my face away from the camera and can see that the writing to card light is stuck on. It will stay on indefinitely. If I try to enter review mode, or if I turn the camera off and on, that's when the glitch comes on fully and I loose complete control of the camera. Full on freeze. Only way to get it back is to pop out the battery, at which point it tells me there was an error writing to card, and it will have to recover data. Doing this, I regain control, but nothing after the snagged image shows up on the card.
I've been working back and forth with Sony Pro support- who claims that they cannot replicate the issue, so I'm wondering if anyone else out there has run into this issue? I've played with two other rentals from them, and it's happened with each body (3 total including mine).
To answer some initial tech questions upfront: No, it's not the buffer that I'm running up against. Yes, I'm using a SanDisk 300mb/s SDXC Class 10 card, and yes, the issue also happened with a similar quality Lexar card. I format my cards regularly. Getting desperate for a solution.