TBackgroundworker error

[ooris]

Hi,

Because of Windows 7 I had to move to from Delphi 7 to Delphi 2009.

When I open my application in D2009 I get: 'Class TBackgroundworker not found'.
When I choose 'cancel' it goes on, I don't see my form, but the application works.
Also the backgroundworker.pas is compiled to a dcu.

Does anyone know what the problem is and how to solve it?

Thanks for your kind support.
Ooris

[Kambiz]

That means you didn't install the component on Delphi 2009.