Hi everybody,

I installed NetBeans 6.8 on Vista and and I'm trying to execute a simple Maven Project.

When I ran the project, I got this set of errors:

WARNING: You are running embedded Maven builds, some build may fail due to incompatibilities with latest Maven release.
         To set Maven instance to use for building, click here.
Scanning for projects...
[#process-resources]
[resources:resources]
Using default encoding to copy filtered resources.
[#compile]
[compiler:compile]
Nothing to compile - all classes are up to date
[exec:exec]
[EL Info]: 2010-04-04 18:22:54.907--ServerSession(15532856)--EclipseLink, version: Eclipse Persistence Services - 2.0.0.v20091127-r5931
[EL Severe]: 2010-04-04 18:22:54.929--ServerSession(15532856)--Local Exception Stack: 
Exception [EclipseLink-4003] (Eclipse Persistence Services - 2.0.0.v20091127-r5931): org.eclipse.persistence.exceptions.DatabaseException
Exception in thread "main" javax.persistence.PersistenceException: Exception [EclipseLink-4003] (Eclipse Persistence Services - 2.0.0.v20091127-r5931): org.eclipse.persistence.exceptions.DatabaseException
Exception Description: Configuration error.  Class [org.apache.derby.jdbc.ClientDriver] not found.
Exception Description: Configuration error.  Class [org.apache.derby.jdbc.ClientDriver] not found.
        at org.eclipse.persistence.exceptions.DatabaseException.configurationErrorClassNotFound(DatabaseException.java:82)
        at org.eclipse.persistence.sessions.DefaultConnector.loadDriverClass(DefaultConnector.java:267)
        at org.eclipse.persistence.sessions.DefaultConnector.connect(DefaultConnector.java:85)
        at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:392)
        at org.eclipse.persistence.sessions.DatasourceLogin.connectToDatasource(DatasourceLogin.java:162)
        at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.getServerSession(EntityManagerFactoryImpl.java:151)
        at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.loginAndDetectDatasource(DatabaseSessionImpl.java:584)
        at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:207)
        at org.eclipse.persistence.internal.jpa.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:228)
        at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:195)
        at com.mycompany.chapter2_ex1.Main.main(Main.java:31)
Caused by: Exception [EclipseLink-4003] (Eclipse Persistence Services - 2.0.0.v20091127-r5931): org.eclipse.persistence.exceptions.DatabaseException
Exception Description: Configuration error.  Class [org.apache.derby.jdbc.ClientDriver] not found.
        at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:368)
        at org.eclipse.persistence.exceptions.DatabaseException.configurationErrorClassNotFound(DatabaseException.java:82)
        at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.getServerSession(EntityManagerFactoryImpl.java:151)
        at org.eclipse.persistence.sessions.DefaultConnector.loadDriverClass(DefaultConnector.java:267)
        at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:207)
        at org.eclipse.persistence.sessions.DefaultConnector.connect(DefaultConnector.java:85)
        at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:195)
        at org.eclipse.persistence.sessions.DatasourceLogin.connectToDatasource(DatasourceLogin.java:162)
        at com.mycompany.chapter2_ex1.Main.main(Main.java:31)
        at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.loginAndDetectDatasource(DatabaseSessionImpl.java:584)
        at org.eclipse.persistence.internal.jpa.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:228)
        at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:368)
        ... 4 more
[ERROR]The following mojo encountered an error while executing:
[ERROR]Group-Id: org.codehaus.mojo
[ERROR]Artifact-Id: exec-maven-plugin
[ERROR]Version: 1.1.1
[ERROR]Mojo: exec
[ERROR]brought in via: Direct invocation
[ERROR]While building project:
[ERROR]Group-Id: com.mycompany
[ERROR]Artifact-Id: chapter2_ex1
[ERROR]Version: 1.0-SNAPSHOT
[ERROR]From file: C:\Users\Charlotte\Documents\NetBeansProjects\chapter2_ex1\pom.xml
[ERROR]Reason: Result of cmd.exe /X /C ""C:\Program Files\Java\jdk1.6.0_11\bin\java.exe" -classpath C:\Users\Charlotte\Documents\NetBeansProjects\chapter2_ex1\target\classes;C:\Users\Charlotte\.m2\repository\javax\persistence\persistence-api\1.0\persistence-api-1.0.jar;C:\Users\Charlotte\.m2\repository\org\eclipse\persistence\javax.persistence\2.0.0\javax.persistence-2.0.0.jar;C:\Users\Charlotte\.m2\repository\org\eclipse\persistence\eclipselink\2.0.0-RC1\eclipselink-2.0.0-RC1.jar com.mycompany.chapter2_ex1.Main" execution is: '1'.
------------------------------------------------------------------------
For more information, run with the -e flag
------------------------------------------------------------------------
BUILD FAILED
------------------------------------------------------------------------
Total time: 3 seconds
Finished at: Sun Apr 04 18:22:55 CEST 2010
Final Memory: 47M/94M
------------------------------------------------------------------------

Theses exceptions rose even if I can run the database by using the console (ij) and when I connect the Database, no errors are showing.

Can you help me please? Thank you very much. Regards.