Trouble installing AIR 2.7 on Win7 64-bit

Somehow air was uninstalled from my system.  I downloaded 2.7 and have been trying to install it and am getting the following error:

"Sorry, an error has occurred.  An error occurred while installing Adobe AIR.  Installation may not be allowed by your administrator.  Please contact your administrator."

Unfortunately, this is my personal computer, I am an administrator and I can't see any settings that should be preventing me from installing this.  I need to update another software that is dependent on AIR and that can't complete because I can't complete my AIR install.

I've tried running it from both my main user profile, as well as another administrator profile I have set up.  There is no log created when I run it from my profile, but there is from the other admin profile.

Please help.

Here is the log:

[2011-06-23:21:13:46] Runtime Installer begin with version 2.7.0.19480 on Windows Vista x86
[2011-06-23:21:13:46] Commandline is:
[2011-06-23:21:13:46] No installed runtime detected
[2011-06-23:21:13:52] Relaunching with elevation
[2011-06-23:21:13:52] Launching subprocess with commandline c:\users\kate\appdata\local\temp\air44fb.tmp\adobe air installer.exe -ei
[2011-06-23:21:14:02] Runtime Installer begin with version 2.7.0.19480 on Windows 7 x86
[2011-06-23:21:14:02] Commandline is: -stdio \\.\pipe\AIR_6692_0 -ei
[2011-06-23:21:14:02] No installed runtime detected
[2011-06-23:21:14:02] Starting silent runtime install. Installing runtime version 2.7.0.19480
[2011-06-23:21:14:03] Installing msi at c:\users\kate\appdata\local\temp\air44fb.tmp\setup.msi with guid {FDB3B167-F4FA-461D-976F-286304A57B2A}
[2011-06-23:21:14:08] Error occurred during msi install operation; beginning rollback: [ErrorEvent type="error" bubbles=false cancelable=false eventPhase=2 text="1603" errorID=0]
[2011-06-23:21:14:08] Rolling back install of c:\users\kate\appdata\local\temp\air44fb.tmp\setup.msi
[2011-06-23:21:14:08] Rollback complete
[2011-06-23:21:14:08] Exiting due to error: [ErrorEvent type="error" bubbles=false cancelable=false eventPhase=2 text="1603" errorID=0]
[2011-06-23:21:14:08] Exiting due to error: [ErrorEvent type="error" bubbles=false cancelable=false eventPhase=2 text="1603" errorID=0]
[2011-06-23:21:14:08] Runtime Installer end with exit code 7
[2011-06-23:21:14:17] Runtime Installer end with exit code 7
[2011-06-23:21:42:09] Runtime Installer begin with version 2.7.0.19480 on Windows Vista x86
[2011-06-23:21:42:09] Commandline is:
[2011-06-23:21:42:09] No installed runtime detected
[2011-06-23:21:42:16] Relaunching with elevation
[2011-06-23:21:42:16] Launching subprocess with commandline c:\users\kate\appdata\local\temp\air842c.tmp\adobe air installer.exe -ei
[2011-06-23:21:42:17] Runtime Installer begin with version 2.7.0.19480 on Windows 7 x86
[2011-06-23:21:42:17] Commandline is: -stdio \\.\pipe\AIR_6064_0 -ei
[2011-06-23:21:42:17] No installed runtime detected
[2011-06-23:21:42:17] Starting silent runtime install. Installing runtime version 2.7.0.19480
[2011-06-23:21:42:17] Installing msi at c:\users\kate\appdata\local\temp\air842c.tmp\setup.msi with guid {FDB3B167-F4FA-461D-976F-286304A57B2A}
[2011-06-23:21:42:20] Error occurred during msi install operation; beginning rollback: [ErrorEvent type="error" bubbles=false cancelable=false eventPhase=2 text="1603" errorID=0]
[2011-06-23:21:42:20] Rolling back install of c:\users\kate\appdata\local\temp\air842c.tmp\setup.msi
[2011-06-23:21:42:20] Rollback complete
[2011-06-23:21:42:20] Exiting due to error: [ErrorEvent type="error" bubbles=false cancelable=false eventPhase=2 text="1603" errorID=0]
[2011-06-23:21:42:20] Exiting due to error: [ErrorEvent type="error" bubbles=false cancelable=false eventPhase=2 text="1603" errorID=0]
[2011-06-23:21:42:20] Runtime Installer end with exit code 7
[2011-06-23:21:42:26] Runtime Installer end with exit code 7
[2011-06-23:21:42:41] Runtime Installer begin with version 2.7.0.19480 on Windows Vista x86
[2011-06-23:21:42:41] Commandline is:
[2011-06-23:21:42:41] No installed runtime detected
[2011-06-23:21:42:46] Relaunching with elevation
[2011-06-23:21:42:46] Launching subprocess with commandline c:\users\kate\appdata\local\temp\air482.tmp\adobe air installer.exe -ei
[2011-06-23:21:42:46] Runtime Installer begin with version 2.7.0.19480 on Windows 7 x86
[2011-06-23:21:42:46] Commandline is: -stdio \\.\pipe\AIR_4064_0 -ei
[2011-06-23:21:42:46] No installed runtime detected
[2011-06-23:21:42:46] Starting silent runtime install. Installing runtime version 2.7.0.19480
[2011-06-23:21:42:46] Installing msi at c:\users\kate\appdata\local\temp\air482.tmp\setup.msi with guid {FDB3B167-F4FA-461D-976F-286304A57B2A}
[2011-06-23:21:42:47] Error occurred during msi install operation; beginning rollback: [ErrorEvent type="error" bubbles=false cancelable=false eventPhase=2 text="1603" errorID=0]
[2011-06-23:21:42:47] Rolling back install of c:\users\kate\appdata\local\temp\air482.tmp\setup.msi
[2011-06-23:21:42:47] Rollback complete
[2011-06-23:21:42:47] Exiting due to error: [ErrorEvent type="error" bubbles=false cancelable=false eventPhase=2 text="1603" errorID=0]
[2011-06-23:21:42:47] Exiting due to error: [ErrorEvent type="error" bubbles=false cancelable=false eventPhase=2 text="1603" errorID=0]
[2011-06-23:21:42:47] Runtime Installer end with exit code 7
[2011-06-23:21:42:56] Runtime Installer end with exit code 7

Kierstin