Cant install the game
Try redownloading the client, its probably missing something…
I tried a few times to re download the client still the same error
I solved my issue here is what I did for anyone else that might have the same problem
Open up your computer and head to your C: drive
Continue on C: drive till it shows Local Disk (C:)/Users/(main user)*/AppData/Local/Temp
*The main user will be the user who is currently logged in trying to download GW2
You will find a file named Gw2.exe.
Right click on Gw2.exe and click “cut” and move the file to another folder. I made a folder on my desktop named it guild wars 2 put the file in there and boom it worked.
there is no file named gw2.exe. :/
Glad you managed to fix the issue.
The error you had indicates a problem with the OS. You may also want to run the system file checker just to make sure all of your important system files are there and the correct versions:
http://pcsupport.about.com/od/toolsofthetrade/ht/sfc-scannow.htm