Unity Crashes with Application.LoadLevel(1)

Hello there,
I have a strange problem. Here is my simplifed tested code:

Code (CSharp):

1. private bool m_bLevelLoading;
2.     void Update()
3.     {
4.         if (!m_bLevelLoading)
5.         {
6.             m_bLevelLoading = true;
7.             Application.LoadLevel(1);
8.         }
9.  
10.     }

When I start this (I deleted all other code from Start and other functions) Unity Crashes.



I tried

Application.LoadLevelAsync(1)

and that works just fine. What am I doing wrong? Of Course I can use Async instead but i was still wondering why it does not work.

Thank you for your help,
best regards!