Development Component Problem

Hi All

I created 2 DC's

I added DC A as a used DC to DC B .

When I try running a View from DC A everything work fine.

When I try to activate the my activity I get the following error:

Metadata of component Test is not valid! ComponentUsage

Role "UsedComponent": A minimum of 1 object(s) is required

Component Test [WDTest]: Component usage has no used component

What am I doing wrong

Thanks

Theo