Hey guys this is nothing major but I was just wondering why the game sometimes pops up with a message before the game comes up saying something like "The application failed to initialize within the time period"

I just took the game out and put it back in and started right up but that has come up like maybe 3 times since I installed AL, just wondering?... thanks you for any help
Today it came up again and I got to write down what exactly it said and it said The Sims 2 Apartment Life 'Unable to authenticate original disk within time period' Retry or Cancel I clicked on Cancel opened my disk tray up picked up the game set it back down and shut the drive then the game started right up, its weird its like its acting as if I pirated the software and its warning me not to continue! also I get errors telling me the game isn't inserted when it indeed is inserted, so how do I get that error when I read somewhere that people can play there game without the disk in the drive?
