downloaded and installed:
jbdevstudio-product-universal-6.0.0.Beta2-v20121115-0009-B105.jar

open jbds.
agreed to send stats to redhat
closed jbds

got:
SESSION 2012-12-07 14:03:30.380 -----------------------------------------------
eclipse.buildId=unknown
java.version=1.6.0_22
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US
Framework arguments: -product com.jboss.jbds.product.product -product com.jboss.jbds.product.product
Command-line arguments: -os linux -ws gtk -arch x86_64 -product com.jboss.jbds.product.product -product com.jboss.jbds.product.product

!ENTRY org.eclipse.osgi 4 0 2012-12-07 14:25:56.679
!MESSAGE Application error
!STACK 1
org.eclipse.swt.SWTException: Failed to execute runnable (java.lang.NullPointerException)
at org.eclipse.swt.SWT.error(SWT.java:4361)
at org.eclipse.swt.SWT.error(SWT.java:4276)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:138)
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3529)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3182)
at org.eclipse.swt.widgets.Display.release(Display.java:3233)
at org.eclipse.swt.graphics.Device.dispose(Device.java:248)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:140)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:353)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:616)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
at org.eclipse.equinox.launcher.Main.main(Main.java:1414)
Caused by: java.lang.NullPointerException
at org.eclipse.ui.internal.WorkbenchPartReference.subscribe(WorkbenchPartReference.java:209)
at org.eclipse.ui.internal.WorkbenchPage.createEditorReferenceForPart(WorkbenchPage.java:972)
at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:3078)
at org.eclipse.ui.internal.WorkbenchPage.access$22(WorkbenchPage.java:3003)
at org.eclipse.ui.internal.WorkbenchPage$8.run(WorkbenchPage.java:2985)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2981)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2940)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2923)
at org.jboss.tools.central.JBossCentralActivator.openJBossCentralEditor(JBossCentralActivator.java:377)
at org.jboss.tools.central.JBossCentralActivator$2$1.run(JBossCentralActivator.java:355)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
... 18 more