Exclamation mark in clips used taken from iPhoto library

[fatLip]

Hi


I am doing a session for a friend who has his clips in his iPhoto library, so i simply accessed them from there, all located in the internal drive via FCPx, after taking two green screen clips and tweaking them i decided to basically pack them into one track, forgot what its called in FCP, but when i re opened the session the next day i see a exclamation mark in my clips in the preview window, yet int he timeline and sidebar where all the iphoto and itunes assets are located nothing has a exclamation mark, the clips are there and they play back and all, yet nothing plays when i try via the time line,


Would be nice if anyone can provide some logical explanation for this behavior, so far no one at apple has commented for the last three days, here are the specs


iMac 27", mid-2010,

Processor 2,93 GHz Intel Core i7,

Memory 12 GB 1333 MHz DDR3,

Graphics ATI Radeon HD 5750 1024 MB,

Software Mac OS X Lion 10.7.4 (11E53),



FCP X v10.0.5