Netduino 2 : program doesn't work after reset

Hello everyone,

I'm new to the community of netduino, but I've a strong background in .Net C# programming.
Currently, I'm running on a problem :
I've done a program that change the Multicolor led's color when I press on a button.

When I deploy the code on the Netduino 2 via Visual Studio 2013, all is working fine.
I can detach the debugger, and it's still working.

But when I reset the board, the program doesn't work anymore althought the board is not in error cause my program blink the onboard LED.

Any idea ?

Thanks in advance for your help

Hyryel