Unable to upgrade from AIR 3.2 to 3.6

The following is the install.log file from my attempt to upgrade Adobe Air 3.2 to 3.6. Any idea what to do, if anything to get the job done. My other Adobe products all seem to work (e.g. Flash, Acrobat X, etc.)

Best

[2013-03-29:13:19:58] Runtime Installer begin with version 3.6.0.6090 on Windows XP x86

[2013-03-29:13:19:58] Commandline is:

[2013-03-29:13:19:58] Installed runtime (3.2.0.2070) located at c:\Program Files\Common Files\Adobe AIR

[2013-03-29:13:20:04] Starting runtime update. Updating runtime from version 3.2.0.2070 to version 3.6.0.6090

[2013-03-29:13:20:04] Installing msi at c:\docume~1\owner\locals~1\temp\air49c.tmp\setup.msi with guid {5AF4B3C4-C393-48D7-AC7E-8E7615579548}

[2013-03-29:13:20:12] Error occurred during msi install operation; beginning rollback: [ErrorEvent type="error" bubbles=false cancelable=false eventPhase=2 text="1603" errorID=0]

[2013-03-29:13:20:12] Rolling back install of c:\docume~1\owner\locals~1\temp\air49c.tmp\setup.msi

[2013-03-29:13:20:12] Rollback complete

[2013-03-29:13:20:12] Exiting due to error: [ErrorEvent type="error" bubbles=false cancelable=false eventPhase=2 text="1603" errorID=0]

[2013-03-29:13:20:14] Runtime Installer end with exit code 7