The HD skin libraries (skinHD.swf, skinHDHud.swf, etc.) are loaded
unconditionally on Win64/Durango/Orbis, and they import the Iggy
library "platformskinHD.swf" by name. However, the platform skin
path and registration name were gated behind a runtime resolution
check (m_fScreenHeight > 720.0f), so at exactly 720p the skin was
registered as "platformskin.swf" instead, and below 720p the non-HD
.swf file was loaded entirely. This caused Iggy to fail resolving
the import, which cascaded into a failed scene load and hit a
__debugbreak().
Always use the HD platform skin on these platforms since the HD
libraries that depend on it are always loaded regardless of
resolution. PS3/PSVita are unaffected as they have their own
non-HD skin loading path.