Reading CD & DVD discs => "Error File not found."

[jimkvg at 3web.com]

Thank you Colin.
   Yes, indeed, I got it.  I created a new user and then entered it.   
It came out ok.  Yes, indeed, when I clicked 'Home folder' and then  
'Desktop', it opened up ok.  No more 'Error:  File not found.'  Now  
what?  I do not want to leave my original user's place because it  
isn't fixed yet.  Otherwise, it would confuse me more if I try to  
transfer everything what is in it to the new user's place.  How do I  
do that?  What more I am asking myself a question, "What would happen  
if the similar problem would happen in the new user's place because it  
happened in my original place at my unexpectation?  And then I could  
not fix it."  I need to know how to fix it.
   Can I use Nautilus Actions Configuration to fix the problem?  I am  
still learning.  Jim