I am having a problem with setting up the Microsoft .NET Framework SDK QuickStart Tutorials. The installation keeps rolling back with the following entries in the log:

10:52:07 AM Sunday, April 08, 2007: [Info] Installing ASP.NET Scriptmaps. Command: C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\aspnet_regiis.exe -s W3SVC/1/ROOT/QuickStartv20

10:52:08 AM Sunday, April 08, 2007: [Fail] Config_IIS_Install: IIS (Internet Information Services) Virtual Directory Registration (failed): [Fail] Failed to install ASP.NET Scriptmaps. Command: C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\aspnet_regiis.exe -s W3SVC/1/ROOT/QuickStartv20

10:52:08 AM Sunday, April 08, 2007: [Begin Samples Rollback]