what is postdating a check mean - Wow ptr stuck on updating setup files

I used to have it installed and working on this machine and removed my previous install using Add/Remove Programs.However, now when I try to reinstall the game, the Diablo 3 Setup starts 'Updating setup files...' and then hangs; I have had a quick google for ideas on how to fix it which seems to bring up a bunch of posts when the server loads were really high last year, nevertheless I have been through the list of suggestions, making sure that secondary login is enabled, running the installer as administrator, etc.After this the App downloaded 42MB of patch data and all good.

9) Run the PTR from that folder by opening the Green Test icon.

After a reasonable hiatus from Blizzard games, I have decided to reinstall Diablo 3.

Here is a full and complete step-by-step set of instructions for copying characters, downloading/installing the public test realm, running the PTR, patching and reinstalling the PTR, and getting on the public test realm and TTR.

This guide is written for a beginner-level audience, but expects basic knowledge of using a web browser and getting around the filesystem.

Also this guide assumes you want to reinstall the PTR hence step 1.