Separate names with a comma.
Found it - does show up in different places. Was on top of iron rock that you land "on" or in grass very hard to see with max graphics grass...
It's just a bug and could be confusing for noobs.
For more information see here Bug Report Template Build:1.8.8 3864 Mode:SP Mode: SERVER NAME: SEED-ID:0 If applicable: MODIFIED PLAYFIELDS:...
[SPOILER]
*SPOILERS* Made it to the station - [SPOILER]