That's too bad. But a single error message is unlikely to yield helpful advice.
Please give us all the following information:
Your computer & processors
Amount of RAM
Your OS version
Your PRECISE version of AE
The type of video footage being used: media container (.mov, .mts, .mp4, etc.) and codec (cineform, H.264, DV, etc.)
The presence of CMYK still footage in your project
Whether you're trying to use Open GL to accelerate renders
Whether you're trying to use multiprocessing
Sorry I should have listed this earlier but here it is!:
2.7Ghz AMD Processor (Single core)
2GB RAM (Not alot I know, but I am not a seroius film maker, This is just a college project, But it is still important )
Windows XP Service Pack 3
I am using .avi video files in my project but I do not know the codecs.
The last 3 on the list I didn't quite understand.
I hope you can help!
File I/O errors almost always point to eitehr damged footage files or issues with your harddrives while saving the file. Could be as trivial as the drive getting full or being heavily fragmented, could be more serious issues with e.g. SATA or RAID drivers. Check your device manager and the disk properties and do a little maintenance liek defragmenting or deleting unnecessary temporary files. Also try to render an image sequence from AE ratehr than another AVI or whatever you have chosen for your output file....
Thanks for the response. i'll keep you updated!