Cant start forge 1.7.10 Java.io.IOException: the handle is invalid

please ensure there are NO jar or mods installed that are for minecraft version 1.8.0 on a 1.7.10 server and that includes the forge universal jar.

also, how is this addressed?

[20:21:34] [Server thread/WARN]: To start the server with more ram, launch it as “java -Xmx1024M -Xms1024M -jar minecraft_server.jar”

please tell us what is your entries for ‘Memory Allocation (Heapsize)’ for both Xmx and Xms?

also, did you open this port? as it is closed by default:

[20:21:39] [Server thread/INFO]: Starting Minecraft server on 0.0.0.0:25575

thanks and best regards,

tNt