bine... i was afraid of this:
what fails is the atof() system function. I'll fix it tomorrow and probably release a proposed fixed binary either tomorrow or Saturday - i'll replace the atof with the QString equivalent

Edit: it coud also be a locale thing that atof assumes ',' as a decimal separator while waze assumes '.' in the strings that are retrievd from the server. What does settings -> Languages & region tells you about the decimal separator?