@physicsman said:

Hi,
I tried to install the V3.1. And now when I click on joint connector, I still get a message in the top left corner of the SU display "Requires SketchyPhysics 3.1".
I use Xp Pro SP2 and SU 8.
SP is very impressive and suit to my need, I don't want to forgive!! Please may I have one comment ?
Many thanks

The message isn't a warning to you. its a warning to other downloaders that they will need sketchyphysics 3.1 to run the model. You will be able to run the sim fine.

The message is useful however, double click it and you can edit it to include the instructions to use your model.