When I download BiG World Setup v9.10 and run the BiG World Setup.vbs , I get the following message.
Warning
Fetching program-updates failed.
Probably the required file for the BWS is not available at the moment.
Due to these circumstances some new additions and fixes may not be available for you.
Since this implies a high potential of errors, we advice you to close the application, wait a few minutes and try to execute the the application once more.
After this the setup freezes.
As far as I remember, it downloaded the needed files in the past (I still have all those mods) and unpacked them and installed them.