Strange issue. Well, I did all my best to help, but unfortunately it seems there is something wrong at installation procedure and/or with your installer.

I suggest you to try the following steps, one each time:

1) Reinstall the add-on using [REPAIR] option, or;

2) Uninstall the add-on, clean all registry data [start > regedit.exe (run as administrator) > Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\CaptainSim\ x770 and x772], restart PC and install it again, or;

3) If the problem persists, maybe your installer is corrupted.

a) Uninstall the add-on, clean all registry data [start > regedit.exe (run as administrator) > Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\CaptainSim\x770 and x772];

b) Download it again ---> Check-in to Customer Support > Select product > Extended Download Service > Get New Links;

c) Restart PC and install the add-on from the new installer, or;

4) If it still doesn't work properly:

Check-in to Customer Support > Select product > Submit a Ticket.

Hope this helps.

Pinatubo.