ttx-it complains that 2007 is not installed

Hi

In certain situations, running the ttx-it integrated in Studio 2011 complains that Trados 2007 is not installed:

AFAIK, the basic 2007 components do get installed along with Studio 2011.

Any idea what can cause this to happen? We have this only on some PCs, but not on others.

Regards


Walter