Bundle pack trouble with king's quest

[Brian, Mighty Pirate]

i'm sure this has been asked before, but why isn't king's quest collection installing, i've downloaded it twice so far and every time i try to install it, it says "error opening file for writing"
what does that mean? and how do i stop it?

[The Gentleman]

Run the Adventure Bundle as administrator.

[Brian, Mighty Pirate]

thank you.