Project won't download

[abame]

I am having issues with the pin_change_int example. I have not changed anything to the code, but it will not load onto my board. In fact, pressing load in this project doesn't even erase the flash because when I try to load it, the same old program keeps running. If I manually clear the flash and then try to load, it says it loaded successfully, but nothing works (I'm assuming LED1 is supposed to turn on when BUTTON1 is pressed). 

[Hung Bui]

Hi Aaron, 

Please make sure the start address of the code is at address 0x000000. We have different variant, one is without softdevice (start at 0x00) and one to be used with softdevice (starts at 0x??? ). There is a chance that you flashed the variant with softdevice and that's why it didn't erase the old application.