Problems with ofxMailUtils

i’m trying use this addon, i imported all the addons that the example needs (ofxThread and ofxMailUtils).

when i compile the example in code::blocks, instantly crash the app. i’m printing in console for know the problem and is this ofAddListener(pop3.newMessageEvent,this,&testApp::newMessage); i dont know what to do.

i using this, and just print in console the number 1.