Modding Help Friend keeps crashing when teleporting to me

We are working with mods, the error that he keeps getting is
"Exception caught in Client Main-loop (MapException) index 12 out of range in OrderedMap"

These are the mods that we currently have in
http://steamcommunity.com/sharedfiles/filedetails/?id=1196338871

does anyone know how to help?

 

Well you should provide the whole log for starters. Use the insert buttons to put it in a code tag.

Are you sure that you're both using the same mods, and that you don't some that they don't?
Do they crash when you teleport to them instead?
Does your location (when they teleport) affect this? For example being on your ship instead of a world.