In setup mode, I try to add a bounding box to root or any other slot, it will crash when I enter the box name and click ok.
Heres the log:

Spine Launcher 1.5.1-full
Licensed to: *******
Windows 7 x86 6.1
Java 1.7.0-u6-unofficial Oracle Corporation
OpenJDK Server VM
Up to date: 1.6.35
Spine 1.6.35-full, LWJGL
NVIDIA Corporation
GeForce GT 220M/PCI/SSE2
3.3.0
Started.
Uncaught
java.lang.NullPointerException
at tb.a(SourceFile:665)
at sj.a(SourceFile:1018)
at sn.f(SourceFile:838)
at afs.a(SourceFile:72)
at sn.a(SourceFile:829)
at hz.a(SourceFile:89)
at jl.a(SourceFile:28)
at gu.a(SourceFile:165)
at gu.a(SourceFile:136)
at com.badlogic.gdx.scenes.scene2d.ui.Button.b(SourceFile:117)
at hv.b(SourceFile:90)
at jn.b(SourceFile:85)
at ha.a(SourceFile:57)
at hc.b(SourceFile:343)
at m.b(SourceFile:94)
at bf.d(SourceFile:303)
at as.run(SourceFile:228)
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)