Failed to execute goal org.liquibase:liquibase-maven-plugin:3.0.0-rc1:generateChangeLog


I have some problems, to generate my first log of my database. I´m using the maven plugin 3.0.0-rc1.

This is my log in debug mode, anyone can help-me to fix?

[DEBUG] Configuring mojo org.liquibase:liquibase-maven-plugin:3.0.0-rc1:generateChangeLog from plugin realm ClassRealm[plugin>org.liquibase:liquibase-maven-plugin:3.0.0-rc1, parent:sun.misc.Launcher$AppClassLoader@ba679e]

[DEBUG] Configuring mojo ‘org.liquibase:liquibase-maven-plugin:3.0.0-rc1:generateChangeLog’ with basic configurator -->

[DEBUG]   (f) clearCheckSums = false

[DEBUG]   (f) defaultSchemaName = cliente

[DEBUG]   (f) driver = org.postgresql.Driver

[DEBUG]   (f) emptyPassword = false

[DEBUG]   (f) includeArtifact = true

[DEBUG]   (f) includeTestOutputDirectory = true

[DEBUG]   (f) logging = INFO

[DEBUG]   (f) password = database

[DEBUG]   (f) promptOnNonLocalDatabase = false

[DEBUG]   (f) propertyFileWillOverride = false

[DEBUG]   (f) url = jdbc:postgresql://localhost:5432/database

[DEBUG]   (f) username = database

[DEBUG]   (f) verbose = false

[DEBUG] – end configuration –

[INFO] ------------------------------------------------------------------------

[DEBUG] expressionVars = null

[DEBUG] expressionVariables = null

[INFO] Executing on Database: jdbc:postgresql://localhost:5432/database

[INFO] Generating Change Log from database database @ jdbc:postgresql://localhost:5432/database (Default Schema: public)

[INFO] ------------------------------------------------------------------------


[INFO] ------------------------------------------------------------------------

[INFO] Total time: 4.054s

[INFO] Finished at: Mon May 27 17:45:21 BRT 2013

[INFO] Final Memory: 5M/123M

[INFO] ------------------------------------------------------------------------

[ERROR] Failed to execute goal org.liquibase:liquibase-maven-plugin:3.0.0-rc1:generateChangeLog (default-cli) on project updatedb: Execution default-cli of goal org.liquibase:liquibase-maven-plugin:3.0.0-rc1:generateChangeLog failed. NullPointerException -> [Help 1]