If you get error 1136 or 1137 during noise calculations, it means that a noise barrier can not find it's outline. In Novapoint Noise, the center line of a noise barrier is the main object. When a noise barrier is registered in Novapoint Noise, an outline is generated, with the width of the barrier. This line is an AutoCAD object of it's own. The noise barrier has a link to this object. If the outline is deleted manually in AutoCAD, the Noise Module looses track and gives this error message during calculation.
To fix the problem you can do the following:
In the Noise ribbon, panel for buildings, press the button "Change..."
You get "Select objects:" in the AutoCAD command line.
Write "All" and press <Enter> twice
You will now get a dialog to make changes in the first barrier. Just press "OK".
The barrier for the next barrier will pop up. Just continue to press "OK" in all dialogs until all barriers are fixed.