simple serial issue

:-[
This is slightly embarrasing..
Now it apparently works. At least I see loads of digits - all of which is something else than "-1". Only issue now is that the Arduino IDE has started freezing 100% when I try to upload new code to my board. It just writes "Uploading to I/O board..." and then its dead. Afte 5 mins I kill it from Windows task manager. That means I cant change:

Serial.print(hardSerialChar, DEC);

into:

Serial.print(hardSerialChar, BYTE);

So I can have a final confirmation that what I see is the NMEA-data (but what could it else be).

But anyway, thank you all for your help. It really was a simple serial issue :wink: