flex 4 migration: how to resolve css warnings

hi,

 

we trying migrate our flex app flex 4, , while compiling app, seeing lot of following warnings. wondering how resolve these warnings. not using flex 3 compatibility flag using halo default theme via compiler argument -theme=${flexlib}/themes/halo/halo.swc.

 

it seems warnings coming css packaged in datavisualization.swc , halo.swc

 

thanks in advance

 

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     [java] c:\svn-work\flex4p3\ui\lib\flex\frameworks\libs\datavisualization.swc$defaults.css(22): warning: cannot resolve namespace qualified type 'advanceddatagrid' in

css selector 'advanceddatagrid'

     [java]

     [java]

     [java]

     [java] c:\svn-work\flex4p3\ui\lib\flex\frameworks\libs\datavisualization.swc$defaults.css(56): warning: cannot resolve namespace qualified type 'advanceddatagriditem

renderer' in css selector 'advanceddatagriditemrenderer'

     [java]

     [java]

     [java]

     [java] c:\svn-work\flex4p3\ui\lib\flex\frameworks\libs\datavisualization.swc$defaults.css(66): warning: cannot resolve namespace qualified type 'advanceddatagridsort

itemrenderer' in css selector 'advanceddatagridsortitemrenderer'

     [java]

     [java]

     [java]

     [java] c:\svn-work\flex4p3\ui\lib\flex\frameworks\libs\datavisualization.swc$defaults.css(83): warning: cannot resolve namespace qualified type 'advanceddatagridhead

errenderer' in css selector 'advanceddatagridheaderrenderer'

     [java]

     [java]

     [java]

     [java] c:\svn-work\flex4p3\ui\lib\flex\frameworks\libs\datavisualization.swc$defaults.css(115): warning: cannot resolve namespace qualified type 'advancedlistbase' i

n css selector 'advancedlistbase'

     [java]

     [java]

     [java]

     [java] c:\svn-work\flex4p3\ui\lib\flex\frameworks\libs\datavisualization.swc$defaults.css(131): warning: cannot resolve namespace qualified type 'legenditem' in css

selector 'legenditem'

     [java]

     [java]

     [java]

     [java] c:\svn-work\flex4p3\ui\lib\flex\frameworks\libs\datavisualization.swc$defaults.css(144): warning: cannot resolve namespace qualified type 'printadvanceddatagr

id' in css selector 'printadvanceddatagrid'

     [java]

     [java]

     [java]

     [java] c:\svn-work\flex4p3\ui\lib\flex\frameworks\libs\datavisualization.swc$defaults.css(164): warning: cannot resolve namespace qualified type 'printolapdatagrid'

in css selector 'printolapdatagrid'

     [java]

     [java]

     [java]

     [java] c:\svn-work\flex4p3\ui\lib\flex\frameworks\themes\halo\halo.swc$defaults.css(911): warning: cannot resolve namespace qualified type 'html' in css selector 'ht

ml'

     [java]

     [java]

     [java]

     [java] c:\svn-work\flex4p3\ui\lib\flex\frameworks\themes\halo\halo.swc$defaults.css(1797): warning: cannot resolve namespace qualified type 'window' in css selector

'window'

     [java]

     [java]

     [java]

     [java] c:\svn-work\flex4p3\ui\lib\flex\frameworks\themes\halo\halo.swc$defaults.css(1808): warning: cannot resolve namespace qualified type 'windowedapplication' in

css selector 'windowedapplication'

maybe datavis swc out of date?

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