05/15/2013 04:39 PMI use windows. doesnt work
Posted by Oog
I understand this is a mac support forum, but obviously Windows users like myself have managed to find their way here while trying to find a solution to this issue. The solution to my problem likely applies to both OSes.
I decided to fire up D3 again after being gone for a while and ran into this 'unable to download a required file' error. Most of the search results pertained to network issues or launcher/agent versions. I was 99% sure my home network was not the issue and updated the launchers. Still unable to download. And then it hit me.
In an effort to reduce stuttering in-game, I used the 'mpqs to flash drive' trick by copying the mpqs to a flash drive and creating a link to that drive for those files rather than use them from the HD. So, come time to update, the flash drive was not plugged in and thus updating these files was impossible.
I imagine if I were to simply put the drive back in and try, it would have begun updating properly, but I'm sort of hoping that issue has been fixed and I don't need to use a 16GB flash drive to play this game. Instead, I simply deleted the link, renamed the old mpq directory to the original name (MPQs), and fired up the launcher. Problem solved.
This is the path to my D3 directory, which may have been changed slightly from the default:
C:\Program Files (x86)\Diablo III\Data_D3\PC
The PC directory should contain your renamed MPQs directory as well as the link to your flash drive MPQ files. Simply delete the link, rename the old mpq directory to 'MPQs' and you're set.