I have encountered this problem

here too/w7

Same here. Please fix it quickly.

Same for me, here is the log :

Spine Launcher 1.1.3-full
Licensed to: xxxxx
Windows 8 x86 6.2
Java 1.7.0-u6-unofficial Oracle Corporation
OpenJDK Server VM
Up to date: 1.3.21
Spine 1.3.21-full, LWJGL
NVIDIA Corporation
GeForce GTX 660 Ti/PCIe/SSE2
4.3.0
Uncaught
java.lang.NoClassDefFoundError: com/badlogic/gdx/assets/loaders/FileHandleResolver
at su.<init>(SourceFile:127)
at com.esotericsoftware.spine.editor.Editor.a(SourceFile:147)
at al.c(SourceFile:192)
at am.addNotify(SourceFile:90)
at java.awt.Container.addImpl(Container.java:1114)
at java.awt.Container.add(Container.java:410)
at au.b(SourceFile:113)
at ax.run(SourceFile:95)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:711)
at java.awt.EventQueue.access$000(EventQueue.java:104)
at java.awt.EventQueue$3.run(EventQueue.java:672)
at java.awt.EventQueue$3.run(EventQueue.java:670)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:681)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:244)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:163)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:147)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:139)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:97)
Caused by: java.lang.ClassNotFoundException: com.badlogic.gdx.assets.loaders.FileHandleResolver
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
... 22 more

Me too on Win7. Please fix soon... Deadlines are approaching.

Spine Launcher 1.1.3-full
Windows 7 x86 6.1
Java 1.7.0-u6-unofficial Oracle Corporation
OpenJDK Server VM
Up to date: 1.3.21
Spine 1.3.21-full, LWJGL
NVIDIA Corporation
GeForce GTX 560/PCIe/SSE2
4.3.0
Uncaught
java.lang.NoClassDefFoundError: com/badlogic/gdx/assets/loaders/FileHandleResolver
at su.<init>(SourceFile:127)
at com.esotericsoftware.spine.editor.Editor.a(SourceFile:147)
at al.c(SourceFile:192)
at am.addNotify(SourceFile:90)
at java.awt.Container.addImpl(Container.java:1114)
at java.awt.Container.add(Container.java:410)
at au.b(SourceFile:113)
at ax.run(SourceFile:95)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:711)
at java.awt.EventQueue.access$000(EventQueue.java:104)
at java.awt.EventQueue$3.run(EventQueue.java:672)
at java.awt.EventQueue$3.run(EventQueue.java:670)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:681)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:244)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:163)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:147)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:139)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:97)
Caused by: java.lang.ClassNotFoundException: com.badlogic.gdx.assets.loaders.FileHandleResolver
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
... 22 more

Sorry about that, fixing it now. :S You'll be glad to know that this update (when it works...) allows you to disable automatic updates. :$

Updated to .22 and - still something wrong

Spine Launcher 1.1.3-full
Licensed to: xxxxxxxxxxxxxxxxx
Windows 7 x86 6.1
Java 1.7.0-u6-unofficial Oracle Corporation
OpenJDK Server VM
Updated to: 1.3.22
Spine 1.3.22-full, LWJGL
ATI Technologies Inc.
ATI Mobility Radeon HD 5400 Series
4.2.12217 Compatibility Profile Context 12.104.0.0
Uncaught
java.lang.NoClassDefFoundError: com/badlogic/gdx/assets/loaders/FileHandleResolver
at su.<init>(SourceFile:127)
at com.esotericsoftware.spine.editor.Editor.a(SourceFile:147)
at al.c(SourceFile:192)
at am.addNotify(SourceFile:90)
at java.awt.Container.addImpl(Container.java:1114)
at java.awt.Container.add(Container.java:410)
at au.b(SourceFile:113)
at ax.run(SourceFile:95)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:711)
at java.awt.EventQueue.access$000(EventQueue.java:104)
at java.awt.EventQueue$3.run(EventQueue.java:672)
at java.awt.EventQueue$3.run(EventQueue.java:670)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:681)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:244)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:163)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:147)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:139)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:97)
Caused by: java.lang.ClassNotFoundException: com.badlogic.gdx.assets.loaders.FileHandleResolver
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
... 22 more

Same here. Still not working.

I am also having this problem. Unable to open the program. OSX 10.8.3. Please advise.

Same here. Mac OS X 10.8.3. Crashed right after update.

It is fixed now. Sorry! This shouldn't happen again, it was caused by a problem in a library Spine uses.

I seem to still have Spine crashing once load reaches 99%.
I'm running the latest version (I assume) on OS X 10.8.3.

If there are any log files or other information that I can provide to help, please let me know.

It's working now for me. Thanks!

Glad to see the OSX version works for you, DangerFinger.

But I seem to still be stuck here...
My launcher tries to load but still exits right after reaching 99%. After that, nothing.
I tried deleting the Spine folder from my Applications folder, downloading Spine.dmg from my download page and installing again, but I still have the same problem.

Any advice, anyone?

Putting a bit of text in run.sh I've confirmed that I'm using the java provided inside Spine.app.
Even if I run Spine (system Java), I still have the same crash at 99% error.

Working for me. Thanks!

I tested it on OSX and it is working for me. Did it used to work for you? Can you check the log file at one of these locations (depending if you are running full or trial):
<user home folder>/Library/Application Support/Spine/spine.log
<user home folder>/Library/Application Support/Spine Trial/spine.log

Here's my spine.log:

Spine Launcher 1.2.0-full
Licensed to: [snip]
Mac OS X x86_64 10.8.3
Java 1.7.0-u6-unofficial Oracle Corporation
OpenJDK 64-Bit Server VM
Up to date: 1.3.23
Spine 1.3.22-full, JGLFW
NVIDIA Corporation
NVIDIA GeForce 320M OpenGL Engine
2.1 NVIDIA-8.10.44 304.10.65f03
java.lang.NoClassDefFoundError: com/badlogic/gdx/assets/loaders/FileHandleResolver
at sr.<init>(SourceFile:127)
at com.esotericsoftware.spine.editor.Editor.a(SourceFile:147)
at am.d(SourceFile:166)
at mp.d(SourceFile:81)
at an.run(SourceFile:72)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:711)
at java.awt.EventQueue.access$000(EventQueue.java:104)
at java.awt.EventQueue$3.run(EventQueue.java:672)
at java.awt.EventQueue$3.run(EventQueue.java:670)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:681)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:244)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:163)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:147)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:139)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:97)
Caused by: java.lang.ClassNotFoundException: com.badlogic.gdx.assets.loaders.FileHandleResolver
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
... 19 more