Beta40 offline install fails

I am unable to install beta40 via the offline installer. I get a 404 on the addons:


This happens even if I uncheck the “install addons” option, which I did the first run since I already downloaded them. Tried again with it checked, same result.

This is on Win7 Enterprise x64. Note I am trying to install to a to a non-default folder.

OK, I tried installing to the default folder and it worked, without trying to download the addons. I then tried installing again to the specified folder I tried before, and it worked also without trying to download the addons. Odd. I will try this again on another machine.