title: can i use design mode in fb 4.6 if I add apache flex sdk 4.9.1 as my compiler?
body: <p>I am running Flash Builder 4.6 and just added Apache flex sdk 4.9.1 (build 1447119) to my mac book pro running Moutain Lion and when i tried to do a quick 'hello world' and add a few elements to the stage using design mode i got following error:</p>
  
  <blockquote>
    <p>The design mode is disabled as the project uses an incompatible version of the flex sdk</p>
  </blockquote>
  
  <p>My question is if i go beyond the default sdk that shipped with fb 4.6 do I therefore loose the ability to use design mode and have to do everything in source mode?</p>
  
  <p>Also, if i am using windows the error is quite similar when i mouseover on <code>Design</code> tab</p>
  
  <blockquote>
    <p>Design mode not supported - incompatible SDK version - Apache Flex</p>
  </blockquote>
  
  <p>Thanks</p>