If your Nvidia 3D Vision Video Player 1.7.5 crashes on MKV video open, it could be caused by CoreAVC 3. Haali Media Splitter uses custom media type for H.264, which is used to override FourCC to avoid using WDF system builtin decoder. Either disable CoreAVC priority or disable custom media type in Haali configuration and try to open your SBS video again.
Windows' application log shows the crash ID 1000 for StereoPlayer.exe in module Stf.dll.
Oh and others seem to think forcing WinXP SP3 compatiblity mode for the player should help. Well it did not help me.