Site work fine with appserv, but fail over debian :S

hi. Im implementing a website, making the develop and testing using appserv. All work perfectly. But when i upload the site to my linux webserver some pages cant be displayed. The page dont display any error, but dont show information. The problem is only when i load the info from a table of my database. The same site and database in appserv work perfectly. What can be the difference between my linux server, and the appserv applications? Thanks in advance