My GPS Run App called Race

for curiosity I wanted to try the application but it doesn't work correctly.
It starts up, waits for the satellites, once hooked up on the display it no longer shows anything except the name of the application (which perhaps could also be removed to save space).

I get back the following errors (v. 68):

in function called from system
Uncaught ReferenceError: "writeTCXfileTrackpoint" is not defined
 at line 72 col 1506 in race.app.js
...ing=thisTime.toISOString();writeTCXfileTrackpoint(timeString...
                              ^
in function "onGPS" called from line 81 col 66 in race.app.js
if(parseGGA(nmeaStr)){onGPS(nmeafix);}

in function called from system
Uncaught ReferenceError: "formatSecondsToMinutesSeconds" is not defined
 at line 84 col 252 in race.app.js
...ontVector(70);g.drawString(formatSecondsToMinutesSeconds(ela...
                              ^
in function "clearTimeDistance" called from line 82 col 81 in race.app.js
...utMode=3;clearTimeDistance();timerOn=1;initialStart=1;Bangle...
                              ^
in function called from system

May it never be useful!