You have to modify Adobe Flash Settings to authorise the location of the CBT files. To do this:
1. Right click on the blue screen with the undefined dialogue box (this should bring up the Adobe Flash options box).
2. Select Global Settings.
3. Select the Advanced tab.
4. Click on the Trusted Locations Settings... button.
5. Click the Add... button.
6. Click the Add Folder... button.
7. Browse to the parent folder where your CBT folder is stored (eg C\ :Airbus), then click OK.
8. Click Confirm, then Close, then X to close the Flash Player Settings Manager Window.
Your CBT package should now work.