input has argument of a shape about shader-park-core

[PWhiddy]

Hey, thanks for reporting this!
The reason that's happing is a missing feature/bug on our end. @torinmb and I are working on a fix.
The issue is actually line 45:

displace(-t,t*Racine3,0.);

With our current setup, you can't directly negate yet a non-primitive variable with -. Subtraction works fine, but the negative can't go in front by itself.
Fortunately there is an easy work around you can use before the fix is out, just do -1*variable instead of -variable.
So if you change line 45 to:

displace(-1*t,t*Racine3,0.);

It will work!