I have only run into that problem since I bought Sanctum Arts "Legion" character. I thought I didn't have enough memory, but perhaps there is an internal call to a missing file... or both. I'm in a similar mystery right now. It's not a commen problem (for me) and my question for you would be: What character(s) are you using when you get the message? Is it a big load or could it be calling for a missing/corrupted file? deci6el mac 733mhz running ProPack with 800 meg RAM