interDyMFoam with cyclicAMI

Hi All,

I want to simulate the settling of a single particle using the Immersed Boundary Method.
So I simply varied the "twoSpheresGlowinskiMPI"-tutorial. Now I have only ONE particle
and boundaries of the type "cyclicAMI".
When I start the simulation it runs fine until the second grid refinement occurs. Here the Courant
Number is increasing extremly and I get the following error:

ERROR: Atom types must start from 1 for granular simulations (mech_param_gran.cpp:74)

I attached the related in.liggght_init file.

Thanks in advance for debugging!

Cheers