FTB Beyond Server not starting

Discussion in 'Tech Support' started by PantalaimonpanX, Jun 9, 2017.

  1. 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: Jun 10, 2017
  2. mc.crab

    mc.crab Well-Known Member

    Try rerunning the install.bat. The server is missing some library files which the install.bat should download.
     
  3. grandrolf

    grandrolf Global moderator Team Member Global Moderator Trusted User

    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.
     
  4. mikel213

    mikel213 Guest

    have the same issue
     
  5. mikel213

    mikel213 Guest

    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 . . .
     
  6. mikel213

    mikel213 Guest

    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 . . .
     
  7. mikel213

    mikel213 Guest

    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 . . .
     
  8. mikel213

    mikel213 Guest

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

    jikuja Launcher Dev Launcher Developer Global Moderator

    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
     
  10. MJCastro86

    MJCastro86 Guest

    i got it working by downloading the launcher wrapper. thanks grandrolf
     
  11. nanonator

    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.
     

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