[t458] - trackevent update errors and checks
[t458] - trackevent update errors and checks

Fixed bug in target update code in editor.

mbuttu/butter,mbuttu/butter,mozilla/butter,mbuttu/butter,BBGInnovate/butter,robinparadise/videoquizmaker,mozilla/butter,robinparadise/videoquizmaker,BBGInnovate/butter