I would contact the Web hosting provider first and see if you are allowed. and or if there may be a problem there.
Another thing I'd like to ask, did you install the package through your admin> package manager? If so then you may want to delete the EzPortal zip on you local Drive then down load the latest one and start all over with the install of the portal package.
Did you set the 755 permission through you FTP client?
Note that if you install the package through or VIA FTA, that's not the way!
regards,
Maxx