stilll on particle tracking
 

This is me again, I posted a quesiton on the particle tracking algorithm and how to apply it to water droplets.

The Tutorial "flow through a butterfly valve" is well explained and it solves quickly and esily, but when I finally try to apply my own geometry, i get immediately the error messages right after launching the simulation with the exsact same parameters: (my geometry is simple: (it is an aerodinamic cilindrical wall coaxial to an external larger case with a diameter of 26 mm).

What could th eproblem be? can it be the mesh made in Icem?

ERROR #001100279 has occurred in subroutine ErrAction. | | Message: | | c_fpx_handler: Floating point exception: Invalid Operand | | | ----------------------------------------------------------+ | An error has occurred in cfx5solve: | | | | The CFX-5 solver exited with return code 1. No results file has | | been created.