In Flash Builder 4.7 I got errors/warnings in .as files when I do not use the this-Operator in front of declared variables.
How to solve this bug?
However the project compiles as normal. It's just a little bit annoying to have lots of those warnings at the border of my .as-files.
It does not always happen, sometimes they appear after I corrected an error.
Flash Builder 4.7 is a little bit confusing, specially if you import one .as-file in more than one MXML document...
Under window>Preferences>FlashBUilder>Editors>ActionScriptCode>Content Assist Cycling you can try to deactivate Variables