At Step 6 you should select the extra installs you want to add. If you don't want to add anything, you should be able to press the Next button. If you want to add some files, press Add and make sure you select properly the directory and the file.
If you select them properly, you will be able to use the Next button:
If you have problems, reboot the computer and begin the process again. Also, you can use the contact form from the official web page to get in touch with the support team.
