NullPointerException at DefaultVersionInfo.java line 122

mvn release:prepare produces NullPointerException:

C:\addressbook>mvn release:prepare
[INFO] Scanning for projects...
[INFO] Searching repository for plugin with prefix: 'release'.
WAGON_VERSION: 1.0-beta-2
[INFO] ------------------------------------------------------------------------
[INFO] Building WebDAV Support for JAX-RS Address-Book Sample
[INFO] task-segment: [release:prepare] (aggregator-style)
[INFO] ------------------------------------------------------------------------
[INFO] [release:prepare]
[INFO] Resuming release from phase 'check-dependency-snapshots'
[INFO] Checking dependencies and plugins for snapshots ...
There are still some remaining snapshot dependencies.: Do you want to resolve th
em now? (yes/no) no: : yes
Dependency type to resolve,: specify the selection number ( 0:All 1:Project Depe
ndencies 2:Plugins 3:Reports 4:Extensions ): (0/1/2/3) 1: : 0
Resolve All Snapshots.: [INFO] -------------------------------------------------
-----------------------
[ERROR] FATAL ERROR
[INFO] ------------------------------------------------------------------------
[INFO] null
[INFO] ------------------------------------------------------------------------
[INFO] Trace
java.lang.NullPointerException
at java.util.regex.Matcher.getTextLength(Matcher.java:1140)
at java.util.regex.Matcher.reset(Matcher.java:291)
at java.util.regex.Matcher.<init>(Matcher.java:211)
at java.util.regex.Pattern.matcher(Pattern.java:888)
at org.apache.maven.shared.release.versions.DefaultVersionInfo.<init>(De
faultVersionInfo.java:122)
at org.apache.maven.shared.release.phase.CheckDependencySnapshotsPhase.p
rocessSnapshot(CheckDependencySnapshotsPhase.java:392)
at org.apache.maven.shared.release.phase.CheckDependencySnapshotsPhase.r
esolveSnapshots(CheckDependencySnapshotsPhase.java:339)
at org.apache.maven.shared.release.phase.CheckDependencySnapshotsPhase.c
heckProject(CheckDependencySnapshotsPhase.java:227)
at org.apache.maven.shared.release.phase.CheckDependencySnapshotsPhase.e
xecute(CheckDependencySnapshotsPhase.java:106)
at org.apache.maven.shared.release.DefaultReleaseManager.prepare(Default
ReleaseManager.java:194)
at org.apache.maven.shared.release.DefaultReleaseManager.prepare(Default
ReleaseManager.java:131)
at org.apache.maven.shared.release.DefaultReleaseManager.prepare(Default
ReleaseManager.java:94)
at org.apache.maven.plugins.release.PrepareReleaseMojo.execute(PrepareRe
leaseMojo.java:136)
at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPlugi
nManager.java:451)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(Defa
ultLifecycleExecutor.java:558)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeStandalone
Goal(DefaultLifecycleExecutor.java:512)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(Defau
ltLifecycleExecutor.java:482)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHan
dleFailures(DefaultLifecycleExecutor.java:330)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegmen
ts(DefaultLifecycleExecutor.java:227)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLi
fecycleExecutor.java:142)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:336)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:129)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:287)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)

at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 8 seconds
[INFO] Finished at: Sun Feb 15 12:34:34 CET 2009
[INFO] Final Memory: 7M/13M
[INFO] ------------------------------------------------------------------------