I got an error following the PetClinic GWT application in less then 30 minutes Any idea?

C:\Users\user\Desktop\petclinic>mvn -e gwt:run
+ Error stacktraces are turned on.
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Building petclinic
[INFO]    task-segment: [gwt:run]
[INFO] ------------------------------------------------------------------------
[INFO] Preparing gwt:run
[INFO] [aspectj:compile {execution: default}]
[INFO] [resources:resources {execution: default-resources}]
[WARNING] Using platform encoding (Cp1252 actually) to copy filtered resources,
i.e. build is platform dependent!
[INFO] Copying 4 resources
[INFO] [compiler:compile {execution: default-compile}]
[INFO] Nothing to compile - all classes are up to date
Downloading: http://repository.springsource.com/maven/bundles/release/org/codeha
us/plexus/plexus-components/1.1.6/plexus-components-1.1.6.pom
[INFO] Unable to find resource 'org.codehaus.plexus:plexus-components:pom:1.1.6'
 in repository com.springsource.repository.bundles.release (http://repository.sp
ringsource.com/maven/bundles/release)
Downloading: http://repository.springsource.com/maven/bundles/external/org/codeh
aus/plexus/plexus-components/1.1.6/plexus-components-1.1.6.pom
[INFO] Unable to find resource 'org.codehaus.plexus:plexus-components:pom:1.1.6'
 in repository com.springsource.repository.bundles.external (http://repository.s
pringsource.com/maven/bundles/external)
Downloading: http://repository.springsource.com/maven/bundles/milestone/org/code
haus/plexus/plexus-components/1.1.6/plexus-components-1.1.6.pom
[INFO] Unable to find resource 'org.codehaus.plexus:plexus-components:pom:1.1.6'
 in repository com.springsource.repository.bundles.milestone (http://repository.
springsource.com/maven/bundles/milestone)
Downloading: http://maven.springframework.org/milestone/org/codehaus/plexus/plex
us-components/1.1.6/plexus-components-1.1.6.pom
[INFO] Unable to find resource 'org.codehaus.plexus:plexus-components:pom:1.1.6'
 in repository spring-maven-milestone (http://maven.springframework.org/mileston
e)
Downloading: http://google-web-toolkit.googlecode.com/svn/2.1.0.M1/gwt/maven/org
/codehaus/plexus/plexus-components/1.1.6/plexus-components-1.1.6.pom
[INFO] Unable to find resource 'org.codehaus.plexus:plexus-components:pom:1.1.6'
 in repository gwt-repo (http://google-web-toolkit.googlecode.com/svn/2.1.0.M1/g
wt/maven)
Downloading: http://repo1.maven.org/maven2/org/codehaus/plexus/plexus-components
/1.1.6/plexus-components-1.1.6.pom

[INFO] ------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] Error building POM (may not be this project's POM).


Project ID: org.codehaus.plexus:plexus-components:pom:1.1.6

Reason: Cannot find parent: org.codehaus.plexus:plexus for project: org.codehaus
.plexus:plexus-components:pom:1.1.6 for project org.codehaus.plexus:plexus-compo
nents:pom:1.1.6


[INFO] ------------------------------------------------------------------------
[INFO] Trace
org.apache.maven.lifecycle.LifecycleExecutionException: Unable to get dependency
 information: Unable to read the metadata file for artifact 'org.codehaus.plexus
:plexus-compiler-api:jar': Cannot find parent: org.codehaus.plexus:plexus for pr
oject: org.codehaus.plexus:plexus-components:pom:1.1.6 for project org.codehaus.
plexus:plexus-components:pom:1.1.6
  org.codehaus.plexus:plexus-compiler-api:jar:1.5.3

from the specified remote repositories:
  com.springsource.repository.bundles.release (http://repository.springsource.co
m/maven/bundles/release),
  com.springsource.repository.bundles.milestone (http://repository.springsource.
com/maven/bundles/milestone),
  spring-maven-snapshot (http://maven.springframework.org/snapshot),
  com.springsource.repository.bundles.external (http://repository.springsource.c
om/maven/bundles/external),
  spring-maven-milestone (http://maven.springframework.org/milestone),
  central (http://repo1.maven.org/maven2),
  gwt-repo (http://google-web-toolkit.googlecode.com/svn/2.1.0.M1/gwt/maven),
  codehaus.org (http://snapshots.repository.codehaus.org),
  JBoss Repo (http://repository.jboss.com/maven2)

Path to dependency:
        1) org.codehaus.mojo:gwt-maven-plugin:maven-plugin:1.3.1.google


        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(Defa
ultLifecycleExecutor.java:711)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeStandalone
Goal(DefaultLifecycleExecutor.java:569)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(Defau
ltLifecycleExecutor.java:539)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHan
dleFailures(DefaultLifecycleExecutor.java:387)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegmen
ts(DefaultLifecycleExecutor.java:348)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLi
fecycleExecutor.java:180)
        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:328)
        at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:138)
        at org.apache.maven.cli.MavenCli.main(MavenCli.java:362)
        at org.apache.maven.cli.compat.CompatibleMain.main(CompatibleMain.java:6
0)
        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)
Caused by: org.apache.maven.artifact.resolver.ArtifactResolutionException: Unabl
e to get dependency information: Unable to read the metadata file for artifact '
org.codehaus.plexus:plexus-compiler-api:jar': Cannot find parent: org.codehaus.p
lexus:plexus for project: org.codehaus.plexus:plexus-components:pom:1.1.6 for pr
oject org.codehaus.plexus:plexus-components:pom:1.1.6
  org.codehaus.plexus:plexus-compiler-api:jar:1.5.3

from the specified remote repositories:
  com.springsource.repository.bundles.release (http://repository.springsource.co
m/maven/bundles/release),
  com.springsource.repository.bundles.milestone (http://repository.springsource.
com/maven/bundles/milestone),
  spring-maven-snapshot (http://maven.springframework.org/snapshot),
  com.springsource.repository.bundles.external (http://repository.springsource.c
om/maven/bundles/external),
  spring-maven-milestone (http://maven.springframework.org/milestone),
  central (http://repo1.maven.org/maven2),
  gwt-repo (http://google-web-toolkit.googlecode.com/svn/2.1.0.M1/gwt/maven),
  codehaus.org (http://snapshots.repository.codehaus.org),
  JBoss Repo (http://repository.jboss.com/maven2)

Path to dependency:
        1) org.codehaus.mojo:gwt-maven-plugin:maven-plugin:1.3.1.google


        at org.apache.maven.artifact.resolver.DefaultArtifactCollector.recurse(D
efaultArtifactCollector.java:430)
        at org.apache.maven.artifact.resolver.DefaultArtifactCollector.collect(D
efaultArtifactCollector.java:74)
        at org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolveTra
nsitively(DefaultArtifactResolver.java:316)
        at org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolveTra
nsitively(DefaultArtifactResolver.java:304)
        at org.apache.maven.plugin.DefaultPluginManager.ensurePluginContainerIsC
omplete(DefaultPluginManager.java:835)
        at org.apache.maven.plugin.DefaultPluginManager.getConfiguredMojo(Defaul
tPluginManager.java:647)
        at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPlugi
nManager.java:468)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(Defa
ultLifecycleExecutor.java:694)
        ... 17 more
Caused by: org.apache.maven.artifact.metadata.ArtifactMetadataRetrievalException
: Unable to read the metadata file for artifact 'org.codehaus.plexus:plexus-comp
iler-api:jar': Cannot find parent: org.codehaus.plexus:plexus for project: org.c
odehaus.plexus:plexus-components:pom:1.1.6 for project org.codehaus.plexus:plexu
s-components:pom:1.1.6
        at org.apache.maven.project.artifact.MavenMetadataSource.retrieveRelocat
edProject(MavenMetadataSource.java:200)
        at org.apache.maven.project.artifact.MavenMetadataSource.retrieveRelocat
edArtifact(MavenMetadataSource.java:94)
        at org.apache.maven.artifact.resolver.DefaultArtifactCollector.recurse(D
efaultArtifactCollector.java:387)
        ... 24 more
Caused by: org.apache.maven.project.ProjectBuildingException: Cannot find parent
: org.codehaus.plexus:plexus for project: org.codehaus.plexus:plexus-components:
pom:1.1.6 for project org.codehaus.plexus:plexus-components:pom:1.1.6
        at org.apache.maven.project.DefaultMavenProjectBuilder.assembleLineage(D
efaultMavenProjectBuilder.java:1396)
        at org.apache.maven.project.DefaultMavenProjectBuilder.assembleLineage(D
efaultMavenProjectBuilder.java:1407)
        at org.apache.maven.project.DefaultMavenProjectBuilder.assembleLineage(D
efaultMavenProjectBuilder.java:1407)
        at org.apache.maven.project.DefaultMavenProjectBuilder.buildInternal(Def
aultMavenProjectBuilder.java:823)
        at org.apache.maven.project.DefaultMavenProjectBuilder.buildFromReposito
ry(DefaultMavenProjectBuilder.java:255)
        at org.apache.maven.project.artifact.MavenMetadataSource.retrieveRelocat
edProject(MavenMetadataSource.java:163)
        ... 26 more
Caused by: org.apache.maven.project.InvalidProjectModelException: Parse error re
ading POM. Reason: expected START_TAG or END_TAG not TEXT (position: TEXT seen .
..<role>Developer</role>\n      6878/?\r</... @163:16)  for project org.codehaus
.plexus:plexus at C:\Users\user\.m2\repository\org\codehaus\plexus\plexus\1.0.8\
plexus-1.0.8.pom
        at org.apache.maven.project.DefaultMavenProjectBuilder.readModel(Default
MavenProjectBuilder.java:1610)
        at org.apache.maven.project.DefaultMavenProjectBuilder.readModel(Default
MavenProjectBuilder.java:1571)
        at org.apache.maven.project.DefaultMavenProjectBuilder.findModelFromRepo
sitory(DefaultMavenProjectBuilder.java:562)
        at org.apache.maven.project.DefaultMavenProjectBuilder.assembleLineage(D
efaultMavenProjectBuilder.java:1392)
        ... 31 more
Caused by: org.codehaus.plexus.util.xml.pull.XmlPullParserException: expected ST
ART_TAG or END_TAG not TEXT (position: TEXT seen ...<role>Developer</role>\n
  6878/?\r</... @163:16)
        at hidden.org.codehaus.plexus.util.xml.pull.MXParser.nextTag(MXParser.ja
va:1095)
        at org.apache.maven.model.io.xpp3.MavenXpp3Reader.parseDeveloper(MavenXp
p3Reader.java:1389)
        at org.apache.maven.model.io.xpp3.MavenXpp3Reader.parseModel(MavenXpp3Re
ader.java:1944)
        at org.apache.maven.model.io.xpp3.MavenXpp3Reader.read(MavenXpp3Reader.j
ava:3912)
        at org.apache.maven.project.DefaultMavenProjectBuilder.readModel(Default
MavenProjectBuilder.java:1606)
        ... 34 more
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 11 seconds
[INFO] Finished at: Fri May 21 20:28:23 BST 2010
[INFO] Final Memory: 45M/205M
[INFO] ------------------------------------------------------------------------