I downloaded texture packer here https://code.google.com/p/libgdx-texturepacker-gui/downloads/detail?name=gdx-texturepacker-3.2.0.zip&can=2&q=
When I run the .jar file it just shuts down before even displaying the gui. Is anyone experiencing a similar problem? I am running OSX El Capitan.
The project is quite old so you can try it's successor: gdx-texture-packer-gui.
[The] project is a successor of Aurelien Ribon's project with whole new GUI and features.
You can download the tool here: https://github.com/crashinvaders/gdx-texture-packer-gui/releases
Do you have the Java runtime environment installed on your computer or just the Java development kit? I don't use the texture packer, but I had a similar problem with the Android SDK manager (it shut down before displaying the GUI) on a new computer where I had only installed the Java JDK. After installing the JRE then it worked fine.
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