"Failed to start the Felix framework" while starting a new spring roo project

-open STS

-create new spring roo project

-project created with only one text file named "log.roo" :

// Spring Roo 1.2.4.RELEASE [rev 75337cf] log opened at 2013-09-16 13:08:50
// [failed] project --topLevelPackage e --projectName e --java 7 --packaging JAR
// Spring Roo 1.2.4.RELEASE [rev 75337cf] log closed at 2013-09-16 13:08:50

-in the error log, there is a "Failed to start the Felix framework" error :

Stack Trace :
org.osgi.framework.BundleException: Error creating bundle cache.
at org.apache.felix.framework.Felix.init(Felix.java:634)
at org.springframework.roo.shell.eclipse.Main.start(Main.java:251)
at org.springframework.roo.shell.eclipse.Bootstrap.start(Bootstrap.java:164)
at org.springframework.ide.eclipse.roo.ui.internal.RooShellTab$8.run(RooShellTab.java:431)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53)
Caused by: java.lang.Exception: Unable to lock bundle cache: java.nio.channels.OverlappingFileLockException
at org.apache.felix.framework.cache.BundleCache.<init>(BundleCache.java:176)
at org.apache.felix.framework.Felix.init(Felix.java:629)
... 4 more
Root exception:
java.lang.Exception: Unable to lock bundle cache: java.nio.channels.OverlappingFileLockException
at org.apache.felix.framework.cache.BundleCache.<init>(BundleCache.java:176)
at org.apache.felix.framework.Felix.init(Felix.java:629)
at org.springframework.roo.shell.eclipse.Main.start(Main.java:251)
at org.springframework.roo.shell.eclipse.Bootstrap.start(Bootstrap.java:164)
at org.springframework.ide.eclipse.roo.ui.internal.RooShellTab$8.run(RooShellTab.java:431)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53)