Left Double Click or Single click entity selection is activating "Drop Geometry"?

Failing double click to edit text or single to select entities started slowly, work ... not work ... work? Then always.  After 2 months it's annoying. In D/S defense I don't update. When I update I always seem to lose a profile, setting, etc..  So I avoid it like the plague. 

I'm a 40 yr CAD user. Started on DOS. I've done all the std settings checks. Tinker Invention is my retirement hobby so I guess I need to update. Using 2025 SP0 currently. Have SP3.0 update file. 

Is there a line item list / video instructions for ensuring an update goes correctly? I'm to old to reprogram a 25 year user profile / settings Again!

 

Thanks in advance for any help

 

**********************update************************

I did the update and of course it's a Model screen nightmare. You really have to stop this stupidity in writing "no choice" software for idiots and start giving a little control to the users who have a brain. This is a whole new thread now.