NEW RENDER ERROR

Question

Hi Adobe.
I'm experiencing some problems with the rendering of some videos on AE CS4. I haven't had this problem before.
When i first installed After Effects a few months ago, i tried to render videos and AE rendered them beautifully, without a single issue. After a while(some months) it started crashing in certain points of the videos, and after a while it couldn't render more than 300 frames(after 300 or less frames it crashed).
I tried all the solutions available in this site and other sites, but none of them worked. I suspected that my computer had became slower over time and assumed that that was the problem, so I decided to reformat(myself) it as soon as possible.
I thought i fixed the problem by formatting my PC. When i tried to render the same video , it couldn't go beyond 200 frames
I'm very confused right now, how is it possible  that before, AE could render the same video without crashing even once , and now (even after formatting) it can't go beyond 200 frames.
Detail: when AE renders the video, it begins very fast and  just crashes at a random frame ( not at the same frame every time)
THIS IS BIZARRE, I TELL YOU!!!
PLEASE HELP ME, THE WORK OF MY LIFE DEPENDS ON IT!!!
My PC specs:
Win7 ultimate SP1
Processor: Pentium(R) Dual-Core E700 2
3.00 GHZ 2.99GHZ
INSTALLED Memory(Ram): 2.00 Gb (1,75 usable)
System type: 32-bit operating system

Answer 1

The key to finding your problem lies in your statement "After a while(some months) it started crashing in certain points of the videos, and after a while it couldn't render more than 300 frames(after 300 or less frames it crashed)."
Something changed on your system in those months. You either installed something, used up some drive space, loaded a new driver, or some component failed. No software that is working perfectly for months for all kinds of projects starts crashing without something changing on the system.
Any program rendering video, and that includes everything from iMovie or Microsoft Movie Maker to After Effects of Nuke, is very sensitive to graphics driver changes, changes in video or audio codecs, any change that re-routs memory. Any application that writes large files to disk a segment at a time is very sensitive to things like virus protection and memory management and can be made unstable by other programs running in the background or that don't release memory properly.
Without knowing what has changed it's impossible for anyone to guess. We can only go from our personal experience. On crashing issues I usually relate what I have heard rather than what I have experienced because I use AE to feed my family and I'm extremely careful with my machines. If they are working, and they are working more than 99% of the time, I don't change anything. If I run into a bug I work hard to track down the issue by providing every detail I can to Adobe's bug reporting stem. I do as much research as I can, and I get a work around to the problem as quickly as I can because lost time diagnosing problems costs me at least 150% of my hourly rate in lost production time and lost opportunity.
My first guess is that you installed something new on your system that is messing with memory allocation or the path to the hard drive. Any new drivers or system updates? Any changes to your anti-virus software? Any new video players downloaded? Without a bunch more information about your system, your project, and the crash logs, all we can do is guess. If you are crashing after about 300 frames you are most likely running out of memory.
Try opening up the secret preferences by holding down the Shift key when you click on Preferences>General tab and setting the Purge Memory to a small number and disable the render cache.
One more thing. Curse at me once I understand your frustration. Curse at me twice for the same thing and I'm walking away. I volunteer my time to other users of this forum, I give away projects, presets, and solutions at least weakly and so do other volunteers on this forum. I think you owe them all an apology.