Mobs not spawning...yes I have searched around

[Phucketall]

I'm am having the hardest time getting mobs to spawn on my SMP server, I have read around and done all the basic things you would ask me to do. Below is some technical info about my server and methods I have taken to help remedy the situation.

FTB Ultimate 1.1.2
Start script:
START "FTBUltimate1.bat" /NORMAL /MIN java -Xms1G -Xmx5G -jar ftbserver.jar nogui

MODS:
All standard mods that come with FTB Ultimate 1.1.2 in addition to [1.4.6]TreeCapitator.Forge.1.4.6.r03.Uni.CoreMod

Steps taken:
View distance was changed from 10 to 7 at one point, did not resolve.
Changed /gamerule doMobSpawning true, did not resolve.
Changed Difficulty to hard, did not resolve.
Deleted and rebuilt and .properties file, did not resolve.
Removed everything but the world and reloaded everything, did not resolve.
Loaded the world up in single player on another PC, did not resolve.
At some point the mobs came back but only for a day or 2 and have vanished again. Spawners still work and we only see very few mobs if lucky normally 1 or 2 at best.

Server Properties:
#Minecraft server properties
#Fri Jul 05 09:33:26 EDT 2013
generator-settings=
allow-nether=true
level-name=FTB3
enable-query=false
allow-flight=true
server-port=25565
level-type=DEFAULT
enable-rcon=false
level-seed=
server-ip=192.168.1.50
max-build-height=256
spawn-npcs=true
white-list=true
spawn-animals=true
snooper-enabled=true
hardcore=false
texture-pack=
online-mode=true
pvp=true
difficulty=3
gamemode=0
max-players=20
spawn-monsters=true
generate-structures=true
view-distance=10
spawn-protection=16
motd=New world save plan in effect

PLEASE HELP!

I should mention that they did indeed spawn before, quite often and saturated the land.

 

[Moasseman]

Is there, by any chance, a barrow hill from TC3 on a loaded node?

 

[Phucketall]

I will investigate and get back to you, I'm at work now. What would be your suggested course of action if I find one?

I do know of a dark node outside the front door to my base buried underground....

 

[Phucketall]

Moasseman. I do have a barrow hill loaded in one of the bases. I assume you are referring to the dark node inside? Should I remove it?

 

[Moasseman]

Try restarting the server on peaceful to get rid of all mobs, then turn it back to whatever you use. See if this will allow mobs to spawn. If it does, it's most likely because the barrow hill (dark node) spews so much stuff in the world that there's no "space" for normal mobs to spawn ^^

 

[Phucketall]

Just solved the problem. Download the server from scratch, started a new world (nothing specific). Then i copied the DIM, region, players,properties, whitelist, ops, computercraft programs, level.dat, session.lock, and etc. folders/files from my backup to the current world. started the world up and we have mobs. I also had my brother go creative and remove the dark nodes from the bases and did not see a direct impact on mobs this morning. But this method of only copying the most crucial files from the world seemed to work, at least for the time being. Only time will tell and I will update this post if necessary. Thank you for your help buddy!

 

[Phucketall]

....only fix the problem for half a day until all went sour again.... no mobs again...... go fish