The download is available again. All of our installer GUID issues should be taken care of.
If you're curious where these troubles came from...
For the early beta, I cobbled together an installer using the Nullsoft Scriptable Install System (
NSIS). NSIS is nice because it's simple, it lets you package up a bunch of files, then dump them on the target computer - as well as some other installer niceties.
The "new installer technology" I've been mentioning uses the Microsoft install system. There is a tool called
WIX that lets you create MSI installers based on XML files. It uses Windows' internal database which maps GUIDs onto installed components. MSI makes certain things like updating a bit nicer and helps manage dependencies, but the globally unique identifiers (
GUIDs) really have to be globally unique to prevent weird stuff from happening.
I reused some code from PyroSim's installer source file and didn't catch all of the GUIDs - and we got weird stuff.