I've created my own skinned version of Spark following it2000's tutorial ( http://www.igniterealtime.org/community/docs/DOC-1360 ).

The program itself it's great, and all the changes I made are ok too, but, after installing it I get the following error:

"An error occured:

java.lang.AbstractMethodError

Error log: ... \install4jError29479.log"

(I've remove the log path).

Here is the .log content:

Exception:

java.lang.AbstractMethodError

at com.install4j.runtime.installer.controller.Controller.executeActions(Unknown Source)

at com.install4j.runtime.installer.controller.Controller.handleCommand(Unknown Source)

at com.install4j.runtime.installer.controller.Controller.start(Unknown Source)

at com.install4j.runtime.installer.Installer.main(Unknown Source)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at com.exe4j.runtime.LauncherEngine.launch(Unknown Source)

at com.exe4j.runtime.WinLauncher.main(Unknown Source)

System properties:

java.runtime.name=Java(TM) SE Runtime Environment

exe4j.moduleName=C:\Documents and Settings\spark_1_0_0.exe

exe4j.semaphoreName=c:_documents and settings_spark_1_0_0.exe

sun.boot.library.path=c:\docume_1\utiliz1\defini~1\temp\e4j659.tmp_dir15242\jre\bin

java.vm.version=10.0-b22

java.vm.vendor=Sun Microsystems Inc.

java.vendor.url=http://java.sun.com/

exe4j.consoleCodepage=cp0

path.separator=;

java.vm.name=Java HotSpot(TM) Client VM

file.encoding.pkg=sun.io

user.country=PT

sun.os.patch.level=Service Pack 2

install4j.exeDir=C:\Documents and Settings\

java.vm.specification.name=Java Virtual Machine Specification

user.dir=C:\DOCUME_1\UTILIZ1\DEFINI~1\Temp\e4j659.tmp_dir15242

java.runtime.version=1.6.0_06-b02

java.awt.graphicsenv=sun.awt.Win32GraphicsEnvironment

java.endorsed.dirs=c:\docume_1\utiliz1\defini~1\temp\e4j659.tmp_dir15242\jre\lib\endorsed

os.arch=x86

java.io.tmpdir=C:\DOCUME_1\UTILIZ1\DEFINI~1\Temp\

line.separator=

java.vm.specification.vendor=Sun Microsystems Inc.

user.variant=

exe4j.tempDir=C:\DOCUME_1\UTILIZ1\DEFINI~1\Temp\e4j659.tmp_dir15242

os.name=Windows XP

proxySet=false

sun.java2d.noddraw=true

sun.jnu.encoding=Cp1252

java.library.path=C:\Documents and Settings;.;C:\WINDOWS\Sun\Java\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\sy stem32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\Programas\Microsoft SQL Server\80\Tools\Binn\;C:\IFOR\WIN\BIN;C:\IFOR\WIN\BIN\EN_US;C:\Programas\Actify \Kernel;C:\Programas\Actify\Importers;C:\Programas\Haskell\bin;C:\ghc\ghc-6.8.3\ bin;;c:\programas\java\jre1.6.0_07\bin;c:\docume_1\utiliz1\defini~1\temp\e4j659.tmp_dir15242\jre\bin

java.specification.name=Java Platform API Specification

java.class.version=50.0

sun.management.compiler=HotSpot Client Compiler

exe4j.isInstall4j=true

os.version=5.1

user.home=C:\Documents and Settings\XX

user.timezone=Europe/London

java.awt.printerjob=sun.awt.windows.WPrinterJob

file.encoding=Cp1252

java.specification.version=1.6

java.class.path=C:\DOCUME_1\UTILIZ1\DEFINI_{1\Temp\e4j659.tmp_dir15242\i4jruntime.jar;C:\DOCUME}1\UTILIZ_1\DEFINI1\Temp\e4j659.tmp_dir15242\user.jar;C:\DOCUME_1\UTILIZ1\DEFINI~1\Temp\e4j659.tmp_dir15242\platform.zip;

user.name=XX

java.vm.specification.version=1.0

java.home=c:\docume_1\utiliz1\defini~1\temp\e4j659.tmp_dir15242\jre

sun.arch.data.model=32

exe4j.launchName=C:\Documents and Settings\spark_1_0_0.exe

user.language=pt

java.specification.vendor=Sun Microsystems Inc.

awt.toolkit=sun.awt.windows.WToolkit

java.vm.info=mixed mode

exe4j.unextractedPosition=15166577

java.version=1.6.0_06

java.ext.dirs=c:\docume_1\utiliz1\defini~1\temp\e4j659.tmp_dir15242\jre\lib\ext;C:\WINDOWS\Sun\Java\lib\ext

sun.boot.class.path=c:\docume_1\utiliz1\defini_{1\temp\e4j659.tmp_dir15242\jre\lib\resources.jar;c:\docume}1\utiliz_1\defini1\temp\e4j659.tmp_dir15242\jre\lib\rt.jar;c:\docume_1\utiliz1\defini_{1\temp\e4j659.tmp_dir15242\jre\lib\sunrsasign.jar;c:\docume}1\utiliz_1\defini1\temp\e4j659.tmp_dir15242\jre\lib\jsse.jar;c:\docume_1\utiliz1\defini_{1\temp\e4j659.tmp_dir15242\jre\lib\jce.jar;c:\docume}1\utiliz_1\defini1\temp\e4j659.tmp_dir15242\jre\lib\charsets.jar;c:\docume_1\utiliz1\defini~1\temp\e4j659.tmp_dir15242\jre\classes

install4j.appDir=C:\Documents and Settings\XX\Definições locais\Temp\

java.vendor=Sun Microsystems Inc.

file.separator=\

java.vendor.url.bug=http://java.sun.com/cgi-bin/bugreport.cgi

sun.io.unicode.encoding=UnicodeLittle

sun.cpu.endian=little

sun.desktop=windows

sun.cpu.isalist=pentium_prommx pentium_pro pentiummmx pentium i486 i386 i86

If anyone could help me..

Thanks in advance.

Edit: Forgot to say that I cannot uninstall the program. It shows the language selection menu but then when I choose it, it simple disappear (it's not shown even in Task Manager).