I've installed tekkit on a more personal server that is hosted by Apex Minecraft. It's been running fine so far, but me and my friend have been making lots of dimensions, and these error messages look like they have a problem with that. The server will now not connect and outputs this in the multicraft server control panel console. Can anyone help?
10.03 18:25:11 [Server] WARNING [SERVER] Controller found 0 dead parts during an audit, 9 parts remain attached
10.03 18:25:11 [Server] WARNING [SERVER] Controller found 60 dead parts during an audit, 52 parts remain attached
10.03 18:25:11 [Server] WARNING [SERVER] Encountered two controllers with the same reference coordinate. Auditing connected parts and retrying.
10.03 18:24:20 [Server] INFO Version check failed
10.03 18:24:10 [Server] INFO Version check attempt 3 failed, trying again in 10 seconds
10.03 18:24:10 [Server] WARNING java.io.FileNotFoundException: https://dl.dropboxusercontent.com/u/38558957/Minecraft/Buildcraft/version.txt
10.03 18:24:10 [Server] WARNING Unable to read from remote version authority.
10.03 18:24:10 [Server] INFO Unloading dimension 1
10.03 18:24:10 [Server] INFO Unloading dimension 26
10.03 18:24:10 [Server] INFO Unloading dimension -100
10.03 18:24:08 [Server] INFO Galacticraft remote version found: 3.0.7
10.03 18:24:08 [Server] SEVERE New Galacticraft version available! v3.0.7 http://micdoodle8.com/
10.03 18:24:06 [Server] INFO Unloading dimension 23
10.03 18:24:06 [Server] INFO Unloading dimension 25
10.03 18:24:06 [Server] INFO Unloading dimension 5
10.03 18:24:06 [Server] INFO Unloading dimension -23
10.03 18:24:06 [Server] INFO Unloading dimension 12
10.03 18:24:06 [Server] INFO Unloading dimension 14
10.03 18:24:06 [Server] INFO Unloading dimension 15
10.03 18:24:06 [Server] INFO Unloading dimension 16
10.03 18:24:06 [Server] INFO Unloading dimension 18
10.03 18:24:06 [Server] INFO Unloading dimension 19
10.03 18:24:06 [Server] INFO Unloading dimension 20
10.03 18:24:06 [Server] WARNING Can't keep up! Did the system time change, or is the server overloaded?
10.03 18:24:06 [Server] INFO Created Retrogen database for dimension 23
10.03 18:24:06 [Server] INFO Created Retrogen database for dimension 25
10.03 18:24:06 [Server] INFO Created Retrogen database for dimension 5
10.03 18:24:06 [Server] INFO Created Retrogen database for dimension -23
10.03 18:24:05 [Server] INFO Created Retrogen database for dimension 12
10.03 18:24:05 [Server] INFO Created Retrogen database for dimension 14
10.03 18:24:05 [Server] INFO Created Retrogen database for dimension 15
10.03 18:24:05 [Server] INFO Created Retrogen database for dimension 16
10.03 18:24:05 [Server] INFO Created Retrogen database for dimension 18
10.03 18:24:05 [Server] INFO Created Retrogen database for dimension 19
10.03 18:24:05 [Server] INFO Created Retrogen database for dimension 20
10.03 18:24:05 [Server] INFO Loading dimension 26 (ServerWorld3) (net.minecraft.server.dedicated.DedicatedServer@29689d4)
10.03 18:24:03 [Server] INFO DynEmc system initialized after 2653 ms
10.03 18:24:03 [Server] INFO Created Retrogen database for dimension -1
10.03 18:24:02 [Server] INFO Loading NEI
10.03 18:24:02 [Server] INFO Registered Dimension: -29
10.03 18:24:02 [Server] INFO Registered Dimension: -28
10.03 18:24:02 [Server] INFO Loading dimension 25 (ServerWorld3) (net.minecraft.server.dedicated.DedicatedServer@29689d4)
10.03 18:24:02 [Server] INFO Loading dimension 23 (ServerWorld3) (net.minecraft.server.dedicated.DedicatedServer@29689d4)
10.03 18:24:02 [Server] INFO Loading dimension 20 (ServerWorld3) (net.minecraft.server.dedicated.DedicatedServer@29689d4)
10.03 18:24:02 [Server] INFO Loading dimension 18 (ServerWorld3) (net.minecraft.server.dedicated.DedicatedServer@29689d4)
10.03 18:24:02 [Server] INFO Loading dimension 19 (ServerWorld3) (net.minecraft.server.dedicated.DedicatedServer@29689d4)
10.03 18:24:02 [Server] INFO Loading dimension 16 (ServerWorld3) (net.minecraft.server.dedicated.DedicatedServer@29689d4)
10.03 18:24:02 [Server] INFO Loading dimension 15 (ServerWorld3) (net.minecraft.server.dedicated.DedicatedServer@29689d4)
10.03 18:24:02 [Server] INFO Loading dimension 14 (ServerWorld3) (net.minecraft.server.dedicated.DedicatedServer@29689d4)
10.03 18:24:02 [Server] INFO Loading dimension 12 (ServerWorld3) (net.minecraft.server.dedicated.DedicatedServer@29689d4)
10.03 18:24:02 [Server] INFO Loading dimension 5 (ServerWorld3) (net.minecraft.server.dedicated.DedicatedServer@29689d4)
10.03 18:24:02 [Server] Startup Done (1.627s)! For help, type "help" or "?"
10.03 18:24:01 [Server] INFO Created Retrogen database for dimension 0
10.03 18:24:01 [Server] INFO Preparing start region for level 0
10.03 18:24:01 [Server] INFO Loading dimension -1 (ServerWorld3) (net.minecraft.server.dedicated.DedicatedServer@29689d4)
10.03 18:24:01 [Server] INFO Loading dimension 1 (ServerWorld3) (net.minecraft.server.dedicated.DedicatedServer@29689d4)
10.03 18:24:01 [Server] INFO Loading dimension -23 (ServerWorld3) (net.minecraft.server.dedicated.DedicatedServer@29689d4)
10.03 18:24:01 [Server] INFO Loaded successfully!
10.03 18:24:00 [Server] INFO Loading Dimensional Doors save data...
10.03 18:24:00 [Server] INFO Loading dimension -100 (ServerWorld3) (net.minecraft.server.dedicated.DedicatedServer@29689d4)
10.03 18:25:11 [Server] WARNING [SERVER] Controller found 0 dead parts during an audit, 9 parts remain attached
10.03 18:25:11 [Server] WARNING [SERVER] Controller found 60 dead parts during an audit, 52 parts remain attached
10.03 18:25:11 [Server] WARNING [SERVER] Encountered two controllers with the same reference coordinate. Auditing connected parts and retrying.
10.03 18:24:20 [Server] INFO Version check failed
10.03 18:24:10 [Server] INFO Version check attempt 3 failed, trying again in 10 seconds
10.03 18:24:10 [Server] WARNING java.io.FileNotFoundException: https://dl.dropboxusercontent.com/u/38558957/Minecraft/Buildcraft/version.txt
10.03 18:24:10 [Server] WARNING Unable to read from remote version authority.
10.03 18:24:10 [Server] INFO Unloading dimension 1
10.03 18:24:10 [Server] INFO Unloading dimension 26
10.03 18:24:10 [Server] INFO Unloading dimension -100
10.03 18:24:08 [Server] INFO Galacticraft remote version found: 3.0.7
10.03 18:24:08 [Server] SEVERE New Galacticraft version available! v3.0.7 http://micdoodle8.com/
10.03 18:24:06 [Server] INFO Unloading dimension 23
10.03 18:24:06 [Server] INFO Unloading dimension 25
10.03 18:24:06 [Server] INFO Unloading dimension 5
10.03 18:24:06 [Server] INFO Unloading dimension -23
10.03 18:24:06 [Server] INFO Unloading dimension 12
10.03 18:24:06 [Server] INFO Unloading dimension 14
10.03 18:24:06 [Server] INFO Unloading dimension 15
10.03 18:24:06 [Server] INFO Unloading dimension 16
10.03 18:24:06 [Server] INFO Unloading dimension 18
10.03 18:24:06 [Server] INFO Unloading dimension 19
10.03 18:24:06 [Server] INFO Unloading dimension 20
10.03 18:24:06 [Server] WARNING Can't keep up! Did the system time change, or is the server overloaded?
10.03 18:24:06 [Server] INFO Created Retrogen database for dimension 23
10.03 18:24:06 [Server] INFO Created Retrogen database for dimension 25
10.03 18:24:06 [Server] INFO Created Retrogen database for dimension 5
10.03 18:24:06 [Server] INFO Created Retrogen database for dimension -23
10.03 18:24:05 [Server] INFO Created Retrogen database for dimension 12
10.03 18:24:05 [Server] INFO Created Retrogen database for dimension 14
10.03 18:24:05 [Server] INFO Created Retrogen database for dimension 15
10.03 18:24:05 [Server] INFO Created Retrogen database for dimension 16
10.03 18:24:05 [Server] INFO Created Retrogen database for dimension 18
10.03 18:24:05 [Server] INFO Created Retrogen database for dimension 19
10.03 18:24:05 [Server] INFO Created Retrogen database for dimension 20
10.03 18:24:05 [Server] INFO Loading dimension 26 (ServerWorld3) (net.minecraft.server.dedicated.DedicatedServer@29689d4)
10.03 18:24:03 [Server] INFO DynEmc system initialized after 2653 ms
10.03 18:24:03 [Server] INFO Created Retrogen database for dimension -1
10.03 18:24:02 [Server] INFO Loading NEI
10.03 18:24:02 [Server] INFO Registered Dimension: -29
10.03 18:24:02 [Server] INFO Registered Dimension: -28
10.03 18:24:02 [Server] INFO Loading dimension 25 (ServerWorld3) (net.minecraft.server.dedicated.DedicatedServer@29689d4)
10.03 18:24:02 [Server] INFO Loading dimension 23 (ServerWorld3) (net.minecraft.server.dedicated.DedicatedServer@29689d4)
10.03 18:24:02 [Server] INFO Loading dimension 20 (ServerWorld3) (net.minecraft.server.dedicated.DedicatedServer@29689d4)
10.03 18:24:02 [Server] INFO Loading dimension 18 (ServerWorld3) (net.minecraft.server.dedicated.DedicatedServer@29689d4)
10.03 18:24:02 [Server] INFO Loading dimension 19 (ServerWorld3) (net.minecraft.server.dedicated.DedicatedServer@29689d4)
10.03 18:24:02 [Server] INFO Loading dimension 16 (ServerWorld3) (net.minecraft.server.dedicated.DedicatedServer@29689d4)
10.03 18:24:02 [Server] INFO Loading dimension 15 (ServerWorld3) (net.minecraft.server.dedicated.DedicatedServer@29689d4)
10.03 18:24:02 [Server] INFO Loading dimension 14 (ServerWorld3) (net.minecraft.server.dedicated.DedicatedServer@29689d4)
10.03 18:24:02 [Server] INFO Loading dimension 12 (ServerWorld3) (net.minecraft.server.dedicated.DedicatedServer@29689d4)
10.03 18:24:02 [Server] INFO Loading dimension 5 (ServerWorld3) (net.minecraft.server.dedicated.DedicatedServer@29689d4)
10.03 18:24:02 [Server] Startup Done (1.627s)! For help, type "help" or "?"
10.03 18:24:01 [Server] INFO Created Retrogen database for dimension 0
10.03 18:24:01 [Server] INFO Preparing start region for level 0
10.03 18:24:01 [Server] INFO Loading dimension -1 (ServerWorld3) (net.minecraft.server.dedicated.DedicatedServer@29689d4)
10.03 18:24:01 [Server] INFO Loading dimension 1 (ServerWorld3) (net.minecraft.server.dedicated.DedicatedServer@29689d4)
10.03 18:24:01 [Server] INFO Loading dimension -23 (ServerWorld3) (net.minecraft.server.dedicated.DedicatedServer@29689d4)
10.03 18:24:01 [Server] INFO Loaded successfully!
10.03 18:24:00 [Server] INFO Loading Dimensional Doors save data...
10.03 18:24:00 [Server] INFO Loading dimension -100 (ServerWorld3) (net.minecraft.server.dedicated.DedicatedServer@29689d4)
As the log says
File Not Found/404 exception -> The file is no longer up, maybe a new version fixes the new file location
Could also try updating Galacticraft
Pretty general, but possibly your server is running low on available ram/cpu (since like, you have that many dimensions..)