I'm still new at editting Custom Visuals. We are using the Timeline Slider V1.3.17 written by Microsoft but just needed some updates to how the years were displayed. After some initial trouble with GUIDs needing to be changed to ensure i could see my updates, i've managed to get the visual to do everything I want.
The only catch is making any change to the javascript file causes the icon to cease working. Its just an empty square in the Visualiations pane. Its selectable and funcitonal, except its just empty.
The files and links to those files are unchanged. I'm curious if others have run into similar issues and have found a solution?