Recently I've had a need to install JavaFX 2.1 on my home machine. My OS is Windows Vista, 32 bit, LG OEM.

I downloaded the cobundle installer and launched it. JDK7 installed properly, but JavaFX installation failed with the following message (in Russian):
"Это действие допускается только для установленных продуктов" (translated to something like "This action is available for installed products only")

Seems like the problem exists for JavaFX SDK installer only (I was able to install JavaFX runtime separately after dowloading it from "For JDK6 users" section, but not SDK downloaded from the same section). I haven't tried x64 installer, because my machine is 32bit.

I'm adding an image with system info (sorry for Russian text, I want the info to be full; I've omitted the product code, but it exists :)
I'm also adding an image with the message itself - just in case.

I've done Windows update today.