After changing the laptop, the zipped project that I was able to import
earlier, is now throwing an error while importing.
Error:"Make sure the selected file is a valid camproj file"
Camtasia Version: 8.0.2
To get the update, you can use the Help > Check for updates menu.
This will provide a link to the download for the update. After it's
downloaded, close Camtasia Studio and run the update EXE. You do not
need to uninstall.
If that does not work than I would contact support.