Autobase plugin dont works

Question

i have installed autobase following the how to on the wiki http://wiki.github.com/RobertFischer/autobase/example-usage but i get the following traceback when i try to create a migration:

Error executing script CreateMigration: startup failed:
CreateMigration: 2: unable to resolve class
liquibase.dsl.properties.LbdslProperties
 @ line 2, column 1.
1 error

org.codehaus.groovy.control.MultipleCompilationErrorsException: startup
failed:
CreateMigration: 2: unable to resolve class
liquibase.dsl.properties.LbdslProperties
 @ line 2, column 1.
1 error

        at
org.codehaus.groovy.control.ErrorCollector.failIfErrors(ErrorCollector.java:296)
        at
org.codehaus.groovy.control.CompilationUnit.applyToSourceUnits(CompilationUnit.java:847)
        at
org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:519)
        at
org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:495)
        at
org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:472)
        at
org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:456)
        at gant.Gant.compileScript(Gant.groovy:635)
        at gant.Gant.this$2$compileScript(Gant.groovy)
        at gant.Gant$_closure1.doCall(Gant.groovy:129)
        at gant.Gant$_closure1.call(Gant.groovy)
        at gant.Gant.loadScript(Gant.groovy:266)
        at gant.Gant$loadScript.callCurrent(Unknown Source)
        at gant.Gant.loadScript(Gant.groovy:248)
Error executing script CreateMigration: startup failed:
CreateMigration: 2: unable to resolve class
liquibase.dsl.properties.LbdslProperties
 @ line 2, column 1.
1 error

It this a bug or a my misconfiguration?