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Modded Server Won't Start

Skyblox_noobz
in Support & Bug Reports

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I am trying to start a modded server with Better MC 5 and keep getting a server failed message and in the logs is says "Caused by: java.lang.ClassNotFoundException: cpw.mods.jarhandling.SecureJar" and "Caused by: java.lang.NoClassDefFoundError: cpw/mods/jarhandling/SecureJar" I'm relatively new to modding and hosting servers so any help would be appreciated.

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