Gantt Chart does not work in version 14.1.2 but did work in previous version 14.1.1.
The only way it would show is if you click on STOP then RESET.
Solution
This problem is fixed in the next release. Version 14.2.1.
Hardware/Software Configuration
Platform: all
OS: n/a
OS Version: n/a
Product: TECNOMATIX
Application: PLANTSIMULATION
Version: V14.1
Function: LOCALIZATION
Ref: 001-9237463