gdx-texture-packer-gui: Cant run the program, it just opens a gray window.

Hi, i have been using this software for quite some time now and this is the first time it happens to me.

I have downloaded versions 4.4.0 and 4.5.0 and both open just a gray screen:

It doesnt matter how i open it (.exe .jar .bat…),

My system info: Windows 10 64 bits Running this command java -XshowSettings:properties -version gave me this:

Property settings:
    awt.toolkit = sun.awt.windows.WToolkit
    file.encoding = Cp1252
    file.encoding.pkg = sun.io
    file.separator = \
    java.awt.graphicsenv = sun.awt.Win32GraphicsEnvironment
    java.awt.printerjob = sun.awt.windows.WPrinterJob
    java.class.path = .
    java.class.version = 52.0
    java.endorsed.dirs = C:\Program Files\Java\jre1.8.0_151\lib\endorsed
    java.ext.dirs = C:\Program Files\Java\jre1.8.0_151\lib\ext
        C:\WINDOWS\Sun\Java\lib\ext
    java.home = C:\Program Files\Java\jre1.8.0_151
    java.io.tmpdir = C:\Users\Roger\AppData\Local\Temp\
    java.library.path = C:\ProgramData\Oracle\Java\javapath
        C:\WINDOWS\Sun\Java\bin
        C:\WINDOWS\system32
        C:\WINDOWS
        C:\ProgramData\Oracle\Java\javapath
        C:\WINDOWS\system32
        C:\WINDOWS
        C:\WINDOWS\System32\Wbem
        C:\WINDOWS\System32\WindowsPowerShell\v1.0\
        C:\Program Files\nodejs\
        C:\Program Files\Git\cmd
        C:\Program Files\PuTTY\
        C:\Program Files\Java\jdk1.8.0_144\bin

        C:\Program Files (x86)\Intel\OpenCL SDK\2.0\bin\x86
        C:\Program Files (x86)\Intel\OpenCL SDK\2.0\bin\x64
        C:\Users\Roger\AppData\Local\Microsoft\WindowsApps

        C:\Program Files\Microsoft VS Code\bin
        C:\Users\Roger\AppData\Roaming\npm
        .
    java.runtime.name = Java(TM) SE Runtime Environment
    java.runtime.version = 1.8.0_151-b12
    java.specification.name = Java Platform API Specification
    java.specification.vendor = Oracle Corporation
    java.specification.version = 1.8
    java.vendor = Oracle Corporation
    java.vendor.url = http://java.oracle.com/
    java.vendor.url.bug = http://bugreport.sun.com/bugreport/
    java.version = 1.8.0_151
    java.vm.info = mixed mode
    java.vm.name = Java HotSpot(TM) 64-Bit Server VM
    java.vm.specification.name = Java Virtual Machine Specification
    java.vm.specification.vendor = Oracle Corporation
    java.vm.specification.version = 1.8
    java.vm.vendor = Oracle Corporation
    java.vm.version = 25.151-b12
    line.separator = \r \n
    os.arch = amd64
    os.name = Windows 10
    os.version = 10.0
    path.separator = ;
    sun.arch.data.model = 64
    sun.boot.class.path = C:\Program Files\Java\jre1.8.0_151\lib\resources.jar
        C:\Program Files\Java\jre1.8.0_151\lib\rt.jar
        C:\Program Files\Java\jre1.8.0_151\lib\sunrsasign.jar
        C:\Program Files\Java\jre1.8.0_151\lib\jsse.jar
        C:\Program Files\Java\jre1.8.0_151\lib\jce.jar
        C:\Program Files\Java\jre1.8.0_151\lib\charsets.jar
        C:\Program Files\Java\jre1.8.0_151\lib\jfr.jar
        C:\Program Files\Java\jre1.8.0_151\classes
    sun.boot.library.path = C:\Program Files\Java\jre1.8.0_151\bin
    sun.cpu.endian = little
    sun.cpu.isalist = amd64
    sun.desktop = windows
    sun.io.unicode.encoding = UnicodeLittle
    sun.java.launcher = SUN_STANDARD
    sun.jnu.encoding = Cp1252
    sun.management.compiler = HotSpot 64-Bit Tiered Compilers
    sun.os.patch.level =
    sun.stderr.encoding = cp850
    sun.stdout.encoding = cp850
    user.country = MX
    user.dir = C:\Users\Roger
    user.home = C:\Users\Roger
    user.language = es
    user.name = Roger
    user.script =
    user.timezone =
    user.variant =

java version "1.8.0_151"
Java(TM) SE Runtime Environment (build 1.8.0_151-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.151-b12, mixed mode)

I dont know if im doing something wrong.

If there is an option to run this in a debug mode or with a log creation i can do it and provide more feedback.

Thanks!