Steps to reproduce:
- Start tracking with two created tools in 'IGT Tracking Toolbox'
- Select tool to calibrate and calibration pointer in 'IGT Navigation Tool Calibration'
- Select manual calibration method in tab 'Tool Tip Calibration'
- Edit tool tip
- Click 'Save Calibrated Navigation Tool' button
- Choose a file name and click 'Save'
--> File was saved without extension *.IGTTool
- Add file extension manually to file name
- Restart workbench
- Create new tool storage in 'IGT Navigation Tool Manager'
- Click 'Load' and select the saved tool
--> Error: Invalid file: cannot parse tool data.