Simulation with collision check. Collision check was ignored without warning
Solution
Problem was due to machine definition:
NX\CMM_INSPECTION\resource\library\machine\ascii\insp_machine_database.dat
Machine definition had '/' special characters :
DATA | Zeiss Accura II 9/14/8 | 5 | 3 Axis gantry CMM | DMIS | Zeiss etc.....
This was allowing simulation, but caused collisions to be ignored
The '/' characters were removed and this resolved the problem
DATA | Zeiss Accura_II_091408 | 5 | 3 Axis gantry CMM | DMIS | Zeiss etc...
Notes and References
Hardware/Software Configuration
Platform: INTL64
OS: windows
OS Version: n/a
Product: NX
Application: CMM_INSPECTION
Version: V10.0.3
Function: SIMULATION
Ref: 001-7891511