Invalid image buffer size question.

I finished a project but once I start to render, an error always pop up at the exact frame stating:

"After Effects error: Invalid image buffer size (40003x40002)"

(37 :: 102)

I have tried purging every 5 frames, yet it still doesn't work.

I am using a mac with 2 gigabyte ram.

Hopefully someone can help me with this, really need to render because I need to submit it soon.

Thanks.