I have seen several people with the problem "GpuSniffer" when After Effects is loading. (I have a Nvidia GTX 760 graphic card)
In my case the solution has been:
****First: Install the CUDA drivers (after do this the "gpusniffer crash" dissapeared but when the program loaded suddenly closed)
****Last: I configured the BIOS in "Optimized" mode and After Effects works perfect.
Retrieving data ...