I use build 7077 and got the same errormessages. I got rid of the error messages when I copied the files from the \C:\Program Files (x86)\Samsung\Samsung SCX-4500 Series\SPanel\PSU\Data folder to c:\windows\
I also did a lot of other stuff - mainly moving stuff around. The contents of the SPanel folder I definately copied somewhere too. Sorry, but I've been working on this so long, that I don't remember all the steps, and they might even not be necesarry all of them, but the psu-->windows you should definately try.