Your best bet would be to completely uninstall TSH and reinstall. Or you can try just reinstalling OBJECTS 1 and 2.
Go into the installer. Uncheck the OBJECTS 1 and 2, and let it run. This should UNINSTALL whatever is installed for those packages.
Then, CHECK both boxes, and run again. This should REINSTALL.
If you run into an error, it could be that things werent backed up properly. In that case, uncheck ALL boxes, run...then UNINSTALL TSH V1.
Then REINSTALL.
Here is my guess as to what happened:
After installation of the objects, you went to install something else (Cockpit, etc) and unchecked one of the OBJECTS boxes. This has the effect of UNINSTALLING the package.
Also make sure you are using the correct version (HIRES or LORES) I dont think this is the problem if the tarmac showed up OK in the beginning