I submitted a bug report to Unity for this, but going to also post information here for others, because my searches for this error on Google yielded no answers. 1) What happened Code (csharp): ========== OUTPUTING STACK TRACE ================== (0x000000014077B97C) c:\buildagent\work\3d1e9e6e6eefaa7f\sdks\opcode\src\opc_obbcollider.cpp (1857 + 0x51c): Opcode::HybridOBBCollider::Collide + 0x64c ========== END OF STACKTRACE =========== 2) How can we reproduce it using the example you attached Build a Windows 64-bit standalone player. Run it. Wait a few seconds, the "Crash_Shape" will collide with "Other_Shape" (which is invisible) and it will crash. Note: If you uncheck "Is Trigger" on the box collider attached to "Other_Shape" it no longer crashes. If you don't build the standalone player with debug settings, the stack trace for this issue looks like: Code (csharp): (0x000000013FB9C91C) (HybridOBBCollider_Crash_Issue): (filename not available): NxCreateCoreSDK + 0xd390c Maybe someone can shed more light on exactly what is happening, but I've narrowed the problem down to a very basic example scene. There is something about certain convex mesh colliders interacting with triggers that is causing the 64-bit standalone player to crash.