I have the same problem i'm trying to change to Release mode but the toolbar button is grey i can't see any way of changing it. When i press the run button it compiles the code but the debug button stays the same grey and inactive. I can't find much help on this and i'm probably missing something totally obvious i am a totally new user. I do have 30 years programming experience so i'm used to solving problems but this has me stumped, any help would be appreciated.