FTB Beyond Server not starting

  • Thread starter PantalaimonpanX
  • Start date
  • Tech Support section is for getting help with FTB related problems. If there's a repeatable issue that can be labeled as a bug, then please use the issue tracker for the pack or the app at GitHub issue trackers - If there's no repository for a pack that means that the pack is old and/or will not be updated. Eventual bugs for older packs will not be fixed.
P

PantalaimonpanX

Guest
Title FTB Beyond Server not starting

Launcher Type Server

Modpack FTB Beyond

Modpack version 1.8.1

Have you modified the pack? No

Link to log file http://paste.feed-the-beast.com/view/be81df6f

Details of the issue I host private minecraft servers on a regular basis for my friends, and have recently started hosting some modded servers. However when I try to start any of the FTB packs as server's they give the above error message.

After I download the zip file, I unzipped with 7-zip.
Then I ran the FTBInstall.bat, followed accepting the eula agreement, then running the ServerStart.bat which gives me the error. Thanks in advance for your time.
 
Last edited by a moderator:

mc.crab

Well-Known Member
Feb 2, 2013
1,397
116
89
Try rerunning the install.bat. The server is missing some library files which the install.bat should download.
 

grandrolf

Global moderator
Team Member
Global Moderator
Trusted User
Aug 29, 2014
2,371
224
108
sweden
There seems to be some issues with the wget and some of the servers hosting the launcherwrapper. If you still fail after above suggestion, try this:

Download this manually:
https://libraries.minecraft.net/net/minecraft/launchwrapper/1.12/launchwrapper-1.12.jar

And put it here:
...\libraries\net\minecraft\launchwrapper\1.12\launchwrapper-1.12.jar

If there is a 0 byte file (or any other), replace it with the fresh one.

Post new log if it still fails.
 
M

mikel213

Guest
There seems to be some issues with the wget and some of the servers hosting the launcherwrapper. If you still fail after above suggestion, try this:

Download this manually:
https://libraries.minecraft.net/net/minecraft/launchwrapper/1.12/launchwrapper-1.12.jar

And put it here:
...\libraries\net\minecraft\launchwrapper\1.12\launchwrapper-1.12.jar

If there is a 0 byte file (or any other), replace it with the fresh one.

Post new log if it still fails.
i tried it but i only get this message
We appear to be missing one or more essential library files.
You will need to add them to your server before FML and Forge will run successfully.java.lang.ClassNotFoundException: net.minecraft.launchwrapper.Launch
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at cpw.mods.fml.relauncher.ServerLaunchWrapper.run(ServerLaunchWrapper.java:25)
at cpw.mods.fml.relauncher.ServerLaunchWrapper.main(ServerLaunchWrapper.java:12)
Exiting...
Press any key to continue . . .
 
M

mikel213

Guest
There seems to be some issues with the wget and some of the servers hosting the launcherwrapper. If you still fail after above suggestion, try this:

Download this manually:
https://libraries.minecraft.net/net/minecraft/launchwrapper/1.12/launchwrapper-1.12.jar

And put it here:
...\libraries\net\minecraft\launchwrapper\1.12\launchwrapper-1.12.jar

If there is a 0 byte file (or any other), replace it with the fresh one.

Post new log if it still fails.
and when i have java 8 installed i get this. The one i posted above is with java 7

Java HotSpot(TM) 64-Bit Server VM warning: ignoring option PermSize=256M; support was removed in 8.0
Java HotSpot(TM) 64-Bit Server VM warning: Using the ParNew young collector with the Serial old collector is deprecated and will likely be removed in a future release
We appear to be missing one or more essential library files.
You will need to add them to your server before FML and Forge will run successfully.java.lang.ClassNotFoundException: net.minecraft.launchwrapper.Launch
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at cpw.mods.fml.relauncher.ServerLaunchWrapper.run(ServerLaunchWrapper.java:25)
at cpw.mods.fml.relauncher.ServerLaunchWrapper.main(ServerLaunchWrapper.java:12)
Exiting...
Press any key to continue . . .
 
M

mikel213

Guest
There seems to be some issues with the wget and some of the servers hosting the launcherwrapper. If you still fail after above suggestion, try this:

Download this manually:
https://libraries.minecraft.net/net/minecraft/launchwrapper/1.12/launchwrapper-1.12.jar

And put it here:
...\libraries\net\minecraft\launchwrapper\1.12\launchwrapper-1.12.jar

If there is a 0 byte file (or any other), replace it with the fresh one.

Post new log if it still fails.
when i tried again to uppdate tha launchwrapper i got thits (java 8)

running install script!
A subdirectory or file libraries\net\minecraft\launchwrapper\1.12 already exists.
--17:39:52-- https://s3.amazonaws.com/Minecraft.Download/versions/1.7.10/minecraft_server.1.7.10.jar
=> `minecraft_server.1.7.10.jar'
Resolving s3.amazonaws.com... done.
Connecting to s3.amazonaws.com[52.216.64.163]:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 9,605,030 [application/octet-stream]

100%[====================================>] 9,605,030 3.74M/s ETA 00:00

17:39:55 (3.74 MB/s) - `minecraft_server.1.7.10.jar' saved [9605030/9605030]

--17:39:55-- https://libraries.minecraft.net/net/minecraft/launchwrapper/1.12/launchwrapper-1.12.jar
=> `libraries\net\minecraft\launchwrapper\1.12\launchwrapper-1.12.jar'
Resolving libraries.minecraft.net... done.
Connecting to libraries.minecraft.net[52.85.242.102]:443... connected.

Unable to establish SSL connection.

Unable to establish SSL connection.
Starting server
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option PermSize=256M; support was removed in 8.0
Java HotSpot(TM) 64-Bit Server VM warning: Using the ParNew young collector with the Serial old collector is deprecated and will likely be removed in a future release
We appear to be missing one or more essential library files.
You will need to add them to your server before FML and Forge will run successfully.java.lang.ClassNotFoundException: net.minecraft.launchwrapper.Launch
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at cpw.mods.fml.relauncher.ServerLaunchWrapper.run(ServerLaunchWrapper.java:25)
at cpw.mods.fml.relauncher.ServerLaunchWrapper.main(ServerLaunchWrapper.java:12)
Exiting...
Press any key to continue . . .
 
M

mikel213

Guest
i think i fund the solution downgrade to java 7 to fix permsize problem and the watch this tutorial for missing files
 

jikuja

legacy FTB Launcher developer
Launcher Developer
Global Moderator
Dec 17, 2013
1,134
111
99
Can we refrain posting "downgrade to java 7" as solution?
  1. Most of the current packs requires java8. Java 7 might work with some packs but not all.
  2. "Java HotSpot(TM) 64-Bit Server VM warning: ignoring option PermSize=256M; support was removed in 8.0" is a warning, not error
 
M

MJCastro86

Guest
i got it working by downloading the launcher wrapper. thanks grandrolf
 
N

nanonator

Guest
Alright, I had the same problem and got it working. However, I got the same error even when replacing the launchwrapper file. What I did to fix it was place the launchwrapper file in the proper directory on a fresh server BEFORE ever running FTBinstall.

Hope that helps.