Error: [main.o] Error 1 On Mac

[SahamGhazavi]

Hi all

For some reason I am getting this error recently.
I created the simples hello world console application:

.pro File
@
#-------------------------------------------------

Project created by QtCreator 2014-04-10T18:51:22

#-------------------------------------------------

QT += core

QT -= gui

TARGET = LIST
CONFIG += console
CONFIG -= app_bundle

TEMPLATE = app

SOURCES += main.cpp
@

main.cpp:
@
#include <QCoreApplication>
#include<QDebug>
#include <QtCore>
int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
qDebug()<<"HI";
return a.exec();
}

@

I assume there is something wrong in my setting.
All other previously written works just fine but not able to write any new one. it just happened today after work.

Thanks

[Nihilivin]

Personnaly, when errors like that occurs, I delete all my .o and my .pro.user. When re-building, new files are auto generated, and it had always solved the problem for me. It's a possible solution, but I don't have explications ^^"

[SahamGhazavi]

I noticed it happens when I add
@
#include<QList>
@