When trying to use a planet hopper to hop directly to another planet that has not yet had its surface generated, I get this error:

The mod Planet Hoppers (2.1.5) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event Planet-Hopper::on_rocket_launch_ordered (ID 129)
value for required field 'surface' is missing
stack traceback:
    [C]: in function '__newindex'
    __Planet-Hopper__/control.lua:100: in function <__Planet-Hopper__/control.lua:64>

Fixed in 2.1.6.

Thanks!