Error install SCRIPT5009: 'YAHOO' is not defined

I need help with the installation of SPICECRM, I get this error and not how to solve…

SCRIPT5009: 'YAHOO' is not defined

I have all the permissions in the 777 folders

Make sure you have a /cache folder
775 shall be enough for web user.
You might encounter same problem as in thread After Installation I get a blank page for Kreport 4.2
Please have a look at it.