grails 1.2-M2 + grailsws - ConversionNotSupportedException

[error]

Initialization of bean failed; nested exception is
org.springframework.beans.ConversionNotSupportedException: Failed to
convert property value of type 'java.util.LinkedHashMap' to required
type 'java.util.Map' for property 'customEditors'; nested exception is
java.lang.IllegalStateException: Cannot convert value of type
[org.apache.cxf.binding.soap.SoapVersionEditor] to required type
[java.lang.String] for property
'customEditors[org.apache.cxf.binding.soap.SoapVersion]'
[/error]

Some info:

[code - cxf-extension-soap.fixml]

...
<bean id="org.apache.cxf.binding.soap.customEditorConfigurer"
class="org.springframework.beans.factory.config.CustomEditorConfigurer">
<property name="customEditors">
<map>
<entry key="org.apache.cxf.binding.soap.SoapVersion">
<bean class="org.apache.cxf.binding.soap.SoapVersionEditor"/>
</entry>
</map>
</property>
</bean>
...

[/code]

[code - org.springframework.beans.factory.config.CustomEditorConfigurer]

...
private java.util.Map<java.lang.String,java.lang.String> customEditors;
...

[/code]