Build using netbeans traccar

Hi all,
Im using ubuntu, I installed netbeans from sources and installed maven pluggin.
I can import the project, and I can BUID fine.
I took the tracker-server.jar I got it, and put on /opt/traccar (from where I use the traccar version 2.12 from 17-Apr-2015, and I try to start again like use to do it and I got this error.

root@GE:/opt/traccar# /opt/traccar/bin/traccar start
Starting traccar...
Waiting for traccar........
WARNING: traccar may have failed to start.
root@GE:/opt/traccar# /opt/traccar/bin/traccar console
Running traccar...
wrapper | --> Wrapper Started as Console
wrapper | Java Service Wrapper Community Edition 64-bit 3.5.26
wrapper | Copyright (C) 1999-2014 Tanuki Software, Ltd. All Rights Reserved.
wrapper | http://wrapper.tanukisoftware.com
wrapper |
wrapper | Launching a JVM...
jvm 1 | WrapperManager: Initializing...
jvm 1 | WrapperSimpleApp:
jvm 1 | WrapperSimpleApp Error: Encountered an error running main:
jvm 1 | WrapperSimpleApp Error: java.lang.NullPointerException
jvm 1 | WrapperSimpleApp Error: at org.traccar.database.QueryBuilder.parse(QueryBuilder.java:60)
jvm 1 | WrapperSimpleApp Error: at org.traccar.database.QueryBuilder.<init>(QueryBuilder.java:49)
jvm 1 | WrapperSimpleApp Error: at org.traccar.database.QueryBuilder.create(QueryBuilder.java:119)
jvm 1 | WrapperSimpleApp Error: at org.traccar.database.DataManager.getLatestPositions(DataManager.java:318)
jvm 1 | WrapperSimpleApp Error: at org.traccar.database.DataCache.<init>(DataCache.java:38)
jvm 1 | WrapperSimpleApp Error: at org.traccar.Context.init(Context.java:93)
jvm 1 | WrapperSimpleApp Error: at org.traccar.Main.main(Main.java:26)
jvm 1 | WrapperSimpleApp Error: at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
jvm 1 | WrapperSimpleApp Error: at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
jvm 1 | WrapperSimpleApp Error: at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
jvm 1 | WrapperSimpleApp Error: at java.lang.reflect.Method.invoke(Method.java:606)
jvm 1 | WrapperSimpleApp Error: at org.tanukisoftware.wrapper.WrapperSimpleApp.run(WrapperSimpleApp.java:325)
jvm 1 | WrapperSimpleApp Error: at java.lang.Thread.run(Thread.java:745)
wrapper | <-- Wrapper Stopped
root@GE:/opt/traccar#

Can anyone try to help me?
Im looking to compile last version to play with JSON to integrate to our software.

REGARDS, and sorry for my english.

There were a lot of changes to the config file since last release. Here is the latest version of the config:
https://github.com/tananaev/traccar/blob/master/debug.xml

Hello guys. I compiled the traccar server, modified the config file, but now when i access http://localhost:8082 i get a not found message (Jetty://). The wrapper log shows this:

STATUS | wrapper  | 2015/06/22 08:35:34 | Launching a JVM...
INFO   | jvm 1    | 2015/06/22 08:35:35 | WrapperManager: Initializing...
INFO   | jvm 1    | 2015/06/22 08:35:36 | 2015-06-22 08:35:36.292:INFO:oejs.Server:jetty-8.1.16.v20140903
INFO   | jvm 1    | 2015/06/22 08:35:36 | 2015-06-22 08:35:36.313:INFO:oejs.AbstractConnector:Started SelectChannelConnector@0.0.0.0:8082
INFO   | jvm 1    | 2015/06/22 08:36:19 | 2015-06-22 08:36:19.585:INFO:oejsh.ContextHandler:stopped o.e.j.s.h.ContextHandler{/m,null}
INFO   | jvm 1    | 2015/06/22 08:36:19 | 2015-06-22 08:36:19.586:INFO:oejsh.ContextHandler:stopped o.e.j.s.ServletContextHandler{/api,null}
STATUS | wrapper  | 2015/06/22 08:36:20 | <-- Wrapper Stopped

It looks like there is still something wrong with your config.