Hi there folks, I've encountered a big problem here....

Let's just say that I have just upgraded to the latest version of Qt and now I am unable to build any of my software projects that use signals/slots. When I try to build I get this message:

Undefined symbols:
"main_window::save()", referenced from:
main_window::qt_metacall(QMetaObject::Call, int, void**)in moc_main_window.o
ld: symbol(s) not found
collect2: ld returned 1 exit status

And yes I'm using the Q_OBJECT macro, so I think I should be running into any sort of problem...

Thanks in Advance.