I have CS4 Master Collection serial number, but only want to download Illustrator

[MOST4860]

I have downloaded from Adobe's website Illustrator, but when I put in the serial number for my CS4 Master Collection, it comes back with serial number is invalid.

[Ned Murphy]

If the serial number is for a Suite then you need to download and install thru the Suite.  The code will not work for individual applications.  You do not have to install the whole set of applications in the Suite but you do have to get the Suite and install it.

[Satwinder_Adobe]

You cannot download individual programs. Please download the complete suit and then while installation, choose only the ones that you wish