Answer
If you want to run the setup and install Tyre on your computer, you must have administrator rights. Otherwise, you may encounter error messages.
So, if you do not have administrator rights (i.e. if are using an account with limited access rights), it maybe impossible to install Tyre properly.
If you receive error messages about missing files or about files that cannot be installed, here is what you have to do: log off from your current account, log on as a user with administrator rights and rerun the setup application.
To install Tyre from your computer to a portable device (USB stick), you don’t need to have administrator rights.