After Effects CS5 onwards is 64bit only.
CS4 is 32 bit, but you'll really struggle on 4mb - which, in reality, works out at about 3 once the system has stolen its piece.
I had download this version of AE Cs4... But when I tried to install it, this appeared...
An error has ocurred in the extraction of some files. Check that you have enough Hard Disk in your PC and the write privileges of the destiny file.
I had mroe than 300 GB of space in my hard disk and I had change the destiny file, but It itsn´t working.
And when I run the setup...
The first square: Checking system profile.
Second Square: Instalation error
The configuration has detected an error and it can´t continue. Please contact the service of client attention of Adobe to get help.
I had try a lot of things...
What shall I do?
Sorry for my English, because my first language is Spanish.
Well, the errors are pretty clear - you are not running with sufficient user priviliges or something si blocking stuff. Turn off UAC and your virus scanner, run as admin.
I turned off the UAC and my virus scanner, I also ran it as administrator... It´s the same problem. Can we get in contact using Skype?