Sims 2 - Bon Voyage suddenly says my original is a "backup"

[databanks]

Well here's the odd thing - what emulation software? I'm not using any. No deamons, nothing. It was just a flat install from original, 3 week old EA-factory CDs that ran for a while then told me :

Please insert the original instead of a backup (1000)

bit of a PITA if you ask me - copy protection that thinks an original is a pirate. Gave up in the end, downloaded a crack. Insane that to be able to play a game I've bought, I have to install something a noCD crack. hrm I feel like taking a photo of the bloody error message with all the Sims2 CDs leaning against the monitor & posting it to EA. Not that they'd pay any attention.