If you have ATI card, simply update you drivers using this (http://www2.ati.com/drivers/auto/amddriverdownloader.exe) AMD program and make it works! (It worked at me)
I'm having similar issues. AE CS5 crashed all the time when I used sliders to resize items so I had to disable OpenGL in preferences.
Now AE stops crashing (but obviously screen draws slower) and I get the Sniffer_GPU.exe error on start up every time. The "Enable OpenGL" is also now grayed out as a result.
I am using nVidia Quadro 2000M on a ThinkPad with the latest drivers installed v18.104.22.16826 (dated 8/3/11). Nothing so far has fixed this. Would love to have OpenGL enabled and work without crashing.
Hi, I have a similar issue, though I started it in the PS forum because that's the first software I opened but it extends to AE also. Anyways, if anyone knows what's going on with the OpenGL issue on the AMD 6950 video card on CS5.5, please let me know.
Here is my thread: http://forums.adobe.com/thread/902265?tstart=0
Hopefully the OP found the problem to the issue but I was having the same issue sniffer_gpu.exe stopped working and then After Effects crashed. In my case the problem was that I had disabled some of the Adobe services through "msconfig". I re-enabled those services and voila! After Effects started working again. Hopefull that helped some of you
Right click on Computer, Properties, Device Manager. Disable your video card. Open After Effects, ignore the Sniffer_GPU.exe (click x, ok , cancel, whatever you get the point). After AE will be opened, you can reenable your video card.