Premise: Media Player Classic (MPC) is a compact media player for 32-bit and 64-bit Microsoft Windows. MPC mimics the look and feel of Windows Media Player 6.4, but provides most options and features available in modern media players. It and its forks are standard media players in the K-Lite Codec Pack and the Combined Community Codec Pack.
Hypothesis: Media Player Classic has compatibility issues on 64-bit Microsoft Windows.