In releases prior to 1.4 graphic objects weren't unloaded when navigated away from. This has been fixed in 1.4.
As a result of this change, If a TGML has a navigate in a script(by using invoke) this could cause a script error if there are scripts on parent elements.
Open the graphic in source mode and add evt.stopPropagation(); before the invoke in the Click() function.
For a an updated version of the component without the error click the link below to go to the community.