Solved My Server is not recognizing my plugin?

Hello,

I recently had a custom plugin coded for me. Everything worked great in my test server, all went according to plan. However, upon taking the plugin to my main server, the server does not recognize the plugin. By this I mean, it doesn't generate the config file, nor does it let me do any of the commands. When typing a command, it just gives the "Unknown command" error... here's the error it's giving me on my server log. It seems like a coding error, but I'm not sure considering it works fine in my test server...
http://pastebin.com/aGJNar9C

Any help is greatly appreciated. Note that the server needs both Residence and Vault to run correctly, both of which I have.

If you need any more info from me in order to facilitate the process, please tell me so.

 

I don't know if this is relevant, but I've gotten this error and all I had to do was update to Java 7

 

Hmm... I don't understand how me updating to Java 7 would help my server. O_O But I'll give it a shot.

Ahh, ok. Yes, that was the answer. Thank you Sayshal, my server host was running on jdk 6. I've gotten my coder to recompile the plugin to JDK6.

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

No problem. It's a weird error but it works !