I detail the scenario to try to locate a solution.
I have a Windows application that uses two webbrowser embedded .NETs that load respective Google Map maps and their corresponding bookmarks.
The loading operation of the bookmarks is done from vb.net generating the corresponding script code that is sent to the webbrowser control that updates its visualization.
All ok and the operation works correctly, but every once in a while a script error is introduced that I present in the screenshot and I do not find information about it in Google, no reference to that error.
I am afraid that it occurs at the time of loading the gmap API but I can not detect the problem.
In the image, the map on the right loads the markers, but throws the error and then the map is displayed.
I hope you can give some clue. Thank you.