This sounds like a corruption of the file. I'd download it again or try to find another version of it.
I am having trouble installing my printer. I have a PC running Windows XP. I have a Apollo p-2500 printer that I am trying to install. It won't let me install any printer, but this is the particular one I have. I downloaded the installer and after it installs mostly, it gives me a message that say, "Environment specified is invalid." I have been unable to find any help with this. Does anybody know? Thanks.