Downloaded and attempted to install R# 2.0.4 and received an MSI 1721 error. I could rant for a very long time on the evils of MSI, but I will try and stay focused. I stumbled upon this JIRA issue and it solved my problem. Change HKLM\Software\Microsoft\VisualStudio\7.1\InstallDir to C:\PROGRA~1\MICROS~2.NET\Common7\IDE\ and re-run the install.
posted @ Tuesday, August 21, 2007 11:43 AM