First, you do not need to create your remaster by logging in as root. Log in as your user and use the command su plus your root password to run the mylivecd and other commands.
Explanation:
su = switch user
giving the root password when asked after using this command gains you root (admin in windows terminology) privileges.
It is very, very inadvisable to run as root, especially if you connect to the internet. Any system maintenance/set-up or whatever you need to do can be done from your user account. There are plenty of tools for this. In the menu - Software Center and More Applications are places where you will find these tools. When you launch one of them, a pop up will request root's password.
Logging in and running as root removes a major security layer from your system. It is a major security risk to do that.
In your menu, under File Tools, you should find an entry for your file manager in root (superuser) mode. Launch it > give root's password when asked > enter /home in the address field > type <Enter> >>> right click on the folder that is named as your user name > choose Properties from the drop menu > choose Permissions >>> check who owns your home and what group > if your user name is not given for both, change it > click the OK button > when asked whether you want this applied to all within the folder, click Yes.
Note: if you are using PCManFM as your file manager, you can open /home as user, then under Tools choose Open Current Folder as Root.
