hi,
we are using jdeveloper as ide , and struts as framework ,,
I dont know when it is started but in debug mode it calls each method twice (calls 
action class execute method twice ) and struts gives followig message after calling my 
first action class (loginAction)  ,,
it seccessfull execute and fiinds mapping for the login,, 
but gives the following message while sending response to the client,
is there anybody encountered with this problem ? 

here is the STRUTS log info, as you can see it does processActionForward twice

[INFO] RequestProcessor - -Processing a 'POST' for path '/Login' 
[INFO] RequestProcessor - -Processing a 'POST' for path '/Login' 
processActionForward(/pages/bireysel/common/welcome.jsp, false) 
processActionForward(/pages/bireysel/common/welcome.jsp, false)


ERROR on the browser:

java.lang.NullPointerException
        org.apache.struts.tiles.ComponentDefinition 
org.apache.struts.tiles.xmlDefinition.FactorySet.getDefinition(java.lang.String, 
javax.servlet.ServletRequest, javax.servlet.ServletContext)
                FactorySet.java:156
        org.apache.struts.tiles.ComponentDefinition 
org.apache.struts.tiles.definition.ComponentDefinitionsFactoryWrapper.getDefinition(java.lang.String,
 javax.servlet.ServletRequest, javax.servlet.ServletContext)
                ComponentDefinitionsFactoryWrapper.java:56
        boolean 
org.apache.struts.tiles.TilesRequestProcessor.processTilesDefinition(java.lang.String, 
boolean, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
                TilesRequestProcessor.java:175




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