Delphi 2010 Error Insight incorrectly flags "Undeclared Identifier"

In D2010, Error Insight is incorrectl开发者_JAVA技巧y underlining in red types like "TOpenDialog" (even though my unit and project's uses both include Dialogs).

Also, in my method TMyFrame.Foo, it fails the same way by flagging a reference to a VCL component in my TMyFrame -- even though Foo and the component are both part of TMyFrame.

SO suggested I read several threads on this subject. One mentions a D2009 fix for this. Is there a D2010 fix?

Other postings have suggested that Error Insight yields too many false alarms and should just be turned off.

Any suggestions?

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Having Delphi 2010 with all its updates, and latest version of IDE Fix Pack, I usually don't have such a problem in Delphi 2010.

I had it a few times, which was fixed by restarting the IDE.