Signal emits, but Slot seems to ignore it...

[fluetke]

Hello everybody,

i've just recently stumbled into a problem, neither me nor my colleagues could solve.

For a mobile application, I created a Downloader class that emits a signal when a file has been saved.
This signal is connected to a slot in another class which updates some info about the downloaded file.
The call to connect() returned true, and the signal gets emitted, but the slot seems to completely ignore the signal.
I tested the signal by connecting it to a slot in the same class, and that slot is called.

Iam seriously stuck right now.
Maybe one of you can spot my error.

a minimal compilable example is included