How to reproduce:
1. Name the user's project folder with non-latin characters
2. Open the user's project
3. Enter Play Mode

Expected result: Editor keeps working
Actual result: Crash occurs

Reproducible with - 2017.2.0a1, 2017.2.3p3, 2017.4.8f1, 2018.1.9f1, 2018.2.2f1, 2018.3.0a7
Not reproducible with - 2017.1.5f1

Note: Stack trace:

0x000007FEEA44B425 (Substance.Engine) cppShutdownSubstance
0x000007FEEA44AD4C (Substance.Engine) cppShutdownSubstance
0x000007FEEA44C987 (Substance.Engine) cppFreeMemory
0x000007FEEA440137 (Substance.Engine) cppShutdownSubstance
0x000007FEEA43B2C4 (Substance.Engine) cppShutdownSubstance
0x000007FEEA43B7D9 (Substance.Engine) cppShutdownSubstance
ERROR: SymGetSymFromAddr64, GetLastError: 'Попытка обращения к неверному адресу.' (Address: 000007FEEA431631)
0x000007FEEA431631 (Substance.Engine) (function-name not available)
ERROR: SymGetSymFromAddr64, GetLastError: 'Попытка обращения к неверному адресу.' (Address: 000007FEEA431915)
0x000007FEEA431915 (Substance.Engine) (function-name not available)
0x000007FEEA43482D (Substance.Engine) cppInitSubstance
0x000000005578FDEF (Mono JIT Code) (wrapper managed-to-native) Substance.Game.NativeFunctions:cppInitSubstance (string)
0x000000005578FB8F (Mono JIT Code) Substance.Game.NativeCallbacks:InitSubstance ()
0x000000005578F625 (Mono JIT Code) Substance.Game.SubstanceMain:Initialize ()
0x000000005578ED38 (Mono JIT Code) Substance.Game.SubstanceMain:OnModeChanged (UnityEditor.PlayModeStateChange)
0x000000005578EB54 (Mono JIT Code) (wrapper delegate-invoke) System.Action`1<UnityEditor.PlayModeStateChange>:invoke_void__this___PlayModeStateChange (UnityEditor.PlayModeStateChange)
0x000000005578EA94 (Mono JIT Code) (wrapper delegate-invoke) System.Action`1<UnityEditor.PlayModeStateChange>:invoke_void__this___PlayModeStateChange (UnityEditor.PlayModeStateChange)
0x000000005578E6EA (Mono JIT Code) [C:\buildslave\unity\build\Editor\Mono\EditorApplication.cs:285] UnityEditor.EditorApplication:Internal_PlayModeStateChanged (UnityEditor.PlayModeStateChange)
0x00000000556F5B18 (Mono JIT Code) (wrapper runtime-invoke) <Module>:runtime_invoke_void_int (object,intptr,intptr,intptr)
0x000007FEC6D5668F (mono) [c:\buildslave\mono\build\mono\mini\mini.c:4937] mono_jit_runtime_invoke
0x000007FEC6CA8A95 (mono) [c:\buildslave\mono\build\mono\metadata\object.c:2623] mono_runtime_invoke
0x0000000140BD3EF7 (Unity) CallStaticMonoMethod
0x0000000140BD3C7E (Unity) CallStaticMonoMethod
0x00000001413C77E0 (Unity) PlayerLoopController::SetIsPlaying
0x00000001413CB0CD (Unity) Application::TickTimer
0x00000001415C4B4D (Unity) MainMessageLoop
0x00000001415C6E3C (Unity) WinMain
0x00000001427201C7 (Unity) __scrt_common_main_seh
0x00000000776F59CD (kernel32) BaseThreadInitThunk
0x000000007795383D (ntdll) RtlUserThreadStart