Just noticed a weird thing, If I delete minecraft_server.jar and have the original craftbukkit.jar on the server, the server works fine, ! without a minecraft_server.jar! I am really confused now.
However, when i place tekkit.jar on the server an rename it to craftbukkit.jar It gives the message that minecraft_server.jar is not running, as you can read in my previous post. And even when I do place minecraft_server.jar on the server it still says the same thing.