@danyhkim said:

AAahhhh! The hinge joint has no controller, since it does not actually have any power. You want a "servo" joint, which is designed to be rotated around one complete turn. If you want it to spin, use a "motor".

Similarly, a slider joint probably has no controller, while a piston does.

unforunately it gives me the exact same error on the servos or motors or anything
i dont know if it might be cause i need a newer version of sketchy?
i got sketchup 7 with sketchy 3.....

@danyhkim said:

If you're renaming the controller through the (forget what it's called. The UI button on the toolbar), you can't delete the entire name given in the dialog box. You can only change the name that is inside brackets and quote marks:

controllername1234("controllername1234")
becomes
controllername1234("NewNameForControl")

If I misunderstood you, please forgive me.

well when you select a hinge for example, and you open the UI(SketchyPhysics Inspector) the "controller" box is empty, it is highlited in blue though but when i enter a name then for the first time, thats when it gives me that error! kinda confused here lolz...

Hello.. just a quick question... sorry im fairly new to sketchy physics.
Every time I try to name the "controller" it gives me an error that I dont know what to do about, and then
it ends up not even renaming the part.
Any help would be appreciated, Thanks!
the error goes as such:

                                 Formula doesn`t compile:
                                 "the name I put in for controller"
                                 "A list of codes an so on"