Unable to obtain security price updates

[LindenSys at aol.com]

Hello All, 
 
I have never had a problem before but for some reason price editor, my  
"Pearl" program suddenly is unable to obtain updated prices from Yahoo USA. I  
receive the message "unable to retrieve prices for the following securities" 
or  something similar. It has every security on my list as not retrievable. 
I have  tried for over a week but the same thing occurs.  Has something 
changed on  the Yahoo USA site? I have tried to edit to another source such as 
Vanguard but  no luck.
 
Anyone else having this issue?
 
Thank you,
Harry