If you run the script without admin-rights (e.g. you click AutoIt3.exe and select BiG World Setup.au3) you may manage to don't have access to the config-files and thus create yourself some problems.
Or you could have problems with wget, which could also result in errors.
Or wget presents the stuff but AutoIt3 fails to read the stdout-stream.
To make it short:
When the download is finished, you can provide the files. If you're sure that those that you got are correct, tell the BWS to just take them and not check size/names.
If that still fails, something is likely wrong will file-permissions. The best bet to not have problems is to put the BWS-folder onto your desktop.
Edited by dabus, 07 April 2015 - 12:07 PM.