We are aware that some users are experiencing a client crash when using waypoints after the October 28th hotfix.
While there is no known workaround or solution at this time, our development team is aware of the issue and are currently investigating.
If you are experiencing game crashes, we encourage you to first exhaust the troubleshooting steps outlined in our Troubleshooting Game Crashes article. If these steps do not resolve the issue, please submit a ticket and we will do our best to assist you.