Suite Product Registration Message - cannot use Acrobat Extended

I've just installed and registered Adobe Technical Communication Suite 2

...but when I try and use Acrobat Extended I get the following message:

Suite Product Activation Needed

Adobe Acrobat Extended was installed as part of a suite.  To enable Adobe Acrobat, please start another component of this suite (such as Adobe Photoshop).

...well I have started Photoshop but Acrobat persists in displaying this message and closing.

I am using Windows 7

Can anyone assist?