Did not find an acceptable spawnpoint problem

[Ananas]

I have a Cuberite installation set up and running on my Linux server. Everything seems to work properly except for modifying the spawn point in world.ini. No matter what I choose for the SpawnPosition values, the server throws the following error on every start up:

Code:

Did not find an acceptable spawnpoint. Generated a random spawnpoint position at {0.00, 168.00, 0.00}

Occasionally, I also receive the following error:

Code:

Bad block entity, missing the coords. Will be ignored.

The relevant sections in world.ini are as follows:

Code:

[SpawnPosition]       
MaxViewDistance=32    
X=-18                 
Y=64                  
Z=-79                 
PregenerateDistance=20

[SpawnProtect]   
ProtectRadius=100

I am not sure if this is possibly relevant, but when executing "/kill" in-game, my character dies and respawns at the incorrect spawn point (I.e., (0, 168, 0)) but when executing "/spawn" my character is instead moved to correct spawn point (i.e., (-18, 64, -79)).

Furthermore, the spawn point I desire to set is inside a structure I have built. Are there clearance requirements on the spawn point?

I am hoping I have missed something simple, but could use some help.

Thank you.