You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser.
ValveTime.co.uk | Valve News, Forums, Steam
I went through 3 boxed versions of the game attempting to install it.
#1-Disk 1 barely readable,disk 2 not readable(1334 error).
#2-Disk 1 and 2 good...disk 3 unreadable(1334 error)
#3-Disk 1 good...disk 2 unreadable(1334 error).
These 1334-1335 errors and other file not found errors-cab files etc. are media problems I'm sure.