Help:Troubleshooting/Map Issues/Special Effects/Zoom Tubes/Wrong Path

The waypoint sequence number of your Zoom Tube is matching with the wrong set of Zoom Tube Waypoints. This happens when you create two Zoom Tubes with the same waypoint sequence number. Note that SRB2 Doom Builder's Zoom Tube Wizard causes the latter to happen automatically. Alter the waypoint sequence number and/or the Waypoint's Angles and you should be fine.