Reproduction steps:

1. Open the attached project.
2. Built and run it for iOS.
3. Click "Play".
- Application crashes:

* thread #1: tid = 0x7727c5, 0x0000000100107990 ...`CrashedCheckBelowForHintsWhy() + 12 at CrashReporter.mm:106, queue = 'com.apple.main-thread', stop reason = EXC_BREAKPOINT (code=1, subcode=0x100107990)
* frame #0: 0x0000000100107990 ...`CrashedCheckBelowForHintsWhy() + 12 at CrashReporter.mm:106 [opt]
frame #1: 0x000000010097e57c ...`RuntimeInvoker_Void_t1841601450_Il2CppObject_Il2CppObject(method=<unavailable>, obj=<unavailable>, args=<unavailable>) + 36 at Il2CppInvokerTable.cpp:647 [opt]
frame #2: 0x000000010137ce4c ...`il2cpp::vm::Runtime::CallUnhandledExceptionDelegate(Il2CppDomain*, Il2CppDelegate*, Il2CppException*) [inlined] il2cpp::vm::Runtime::Invoke(method=0x0000000104273bb0, obj=<unavailable>, params=<unavailable>) + 108 at Runtime.cpp:483 [opt]
...

Note:
Full log in the edit.

Reproduced with:
5.5.0f1, 5.5.0p3, 5.6.0b3
IL2CPP

Not reproducible with:
Mono2x

Resolution:
Playmaker related issue.
This error indicates that the type "material" should have a method named "Set", but that method does not exist.
It can probably be fixed by creating a link.xml file in the project to require the code stripper to preserve the the proper methods.

More information:
https://docs.unity3d.com/Manual/iphone-playerSizeOptimization.html
http://hutonggames.com/playmakerforum/index.php?topic=11126.0