Issue wtih Underlying Software Component Version

Hi,

I have a fresh PI 7.11 system installed and yesterday I started creating the software components etc.. imported them into ESR but when I wanted to configure the underlying software component versions for some of the software components I was unable to do so as there no option to add a swc.. If I open up my swcv and go the the details tab it says there underlying software component version with a big blank list box but no + or - or anything allowing me to add or remove. Does anyone know why this is and how to enable it? I suppose I can add the dependencies on the SLD as well then just re-import the swcv? But I still like to know how to enable this on ESR.

Thanks,

Jan