Tool Matrix keeps emptying out...

I am running D/S Version V1R1.4... Whenever I populate the Tool Matrix, then switch to the properties tab and return to the Tool matrix, it is always empty.

I have tried several ways of populating and looked in different areas to see if there is a setting I should pick.

I recently (today) upgraded to this version, but am seriously considering going back to a lesser version.

Please help...

Regards,

Paul.