Illustrator CS5: Random Crashes When Saving Or Previewing My Work

Question

Hello Adobe Community,
I tend to get errors when I save my work in Illustrator. A few read as follows:
"Unknown Error"
"Can't Save Illustration"
"Not Enough Ram Available"
The last error I got read: "Can't finish previewing. There is not enough memory ID = -108"
These errors don't happen all the time, but they occur often. And when they do occur, more often than not end up crashing Illustrator and can't save whatever I just worked on.
Not sure what's causing them. Here's what I've tried doing:
Cleared my Illustrator preferences
Uninstall the whole Aodbe Suite > Run the Adobe Remover Tool > Reinstall Adobe Suite
Run disk clean up/defragmenter
I get some of these errors even when I only have Illustrator and my browser open - no other programs are running except for anti-virus/malware software.
Here's some trivial information about my machine and the file I'm working on:
RAM: 4GB
The file I'm trying to edit is 0.97MB and stored locally on my desktop (as opposed to a network drive)
Graphics Card: Nvidia GeForce 8400GS (up-to-date)
Hard drive has 231GB of free space
64-bit processor
Runs DirectX 11
I'm in the process of validating my fonts as I've read that invalid fonts sometimes cause issues.
Any other suggestions? Please help me! Thanks in advance!

Answer 1

Have you considered that this could be something you do in the files thmeselves? Gradient meshes, blends, filters all can consume lots of memory and when AI is trying to save the Preview, their combined requirements may exceed what your system can handle. also your file may simply be "bad" in that it may have corrupted data somewhere. This can happen when it was originally created elsewhere or data inserted from an external source using placing or copy&paste....
Mylenium