The Object Tree is corrupt.
Solution
A customer created a CompoundPart component using JT export/import, and then loaded the CompoundPart component into Process Simulate more than once. This will cause the Object Tree to be changed in unpredictable ways. This is a bug. You should not be able to do this.
Notes and References
Hardware/Software Configuration
Platform: INTL64
OS: windows
OS Version: n/a
Product: TECNOMATIX
Application: PROCESS_SIMULAT
Version: V13.0.X
Function: ROBOTICS
Ref: 001-8885759