Well then that is part of the problem. If you have to change the hex code for a entry that isnt there. Then that is where the issue starts. But i am trying to figure out why Osiris linked you to Illistrator issue when you said reader...
So lets start with are you up to date with all updates? HAve you check Adobe site for any noformation on this? There doesnt even seem to be any info on this at the Adobe site. So either try to download it again. Or contact Adobe. There is nothing more we can do since there is no information on this error with Reader. Sorry.