I just uploaded a new version of the installer. The program is the same and it will stay that way for a few more weeks at least. But, this version of the MSI should alleviate some of the issues people have reported with the Microsoft.mshtml assembly. The file is now installed locally instead of assuming it will be in the GAC. It turns out that machines without Visual Studio might not have the interop assembly and this caused a variety of errors that I could not reproduce because… I have Visual Studio.
Don’t you just love COM interop?