Urgent:Issue with converting mx: Application to S: application

[avdave]

Hello,

  I am currently trying to migrate a flex 3 project to Flash4...but when I replace <mx: application> to <s: Application> it gives following answer:

Could not resolve <s:Application> to a component implementation.

I have included the ur;s and libraries such as :

xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx"

Also I have used  following to implement swiz framework:

xmlns:control="edu.mizzou.firefly.control.*"    xmlns:view="edu.mizzou.firefly.view.*" xmlns:core="edu.mizzou.firefly.view.core.*" xmlns:swiz="http://swiz.swizframework.org

Please can any one suggest me where I am going wrong?? Any help would be highly appreciated

Thanks

Akshay

[jsd99]

Are you linking with the 4.0 (or later) SDK?

[avdave]

Not sure wht u meant by that but if your question is whether I am using Flash builder 4 or not then yes I am using Flash builder 4 and trying to migrate a Flex 3 project to flex 4

[jsd99]

Open up the project properties window.  Go to "Flex Compiler".  What does it say at the top for "Flex SDK Version"?  Which option do you have selected?

[avdave]

The SDK version is Flex4....Am I supposed to make any  changes there??? Also I observed that in the application declaration below:

<s:Application frameRate="30" layout="absolute" backgroundGradientAlphas="[1.0, 1.0]"
    horizontalScrollPolicy="off" verticalScrollPolicy="off" backgroundGradientColors="[#000000, #323232]" addedToStage="stageHandler(event)"
   xmlns:fx="http://ns.adobe.com/mxml/2009"
               xmlns:s="library://ns.adobe.com/flex/spark"
               xmlns:mx="library://ns.adobe.com/flex/mx">

Some of the mx component doesn't work as intended in Flex 4 such as

layout= mx.Core.LayoutContainer

backgroundGradientAlphas=mx.Core.Application

horizontalScrollPolicy,verticalScrollPolicy=mx.Core.Container

   I am looking into the documentation of Flex 4 but I am not able to find any solutions to them

   Any suggestions from your side??