"Sorry, an error has occurred... Installation may not be allowed by your administrator"

Hello everyone.  I am getting the above message when trying to install Adobe AIR.  Here is more information on the issue:

1) I used to have it installed fine, but when I uninstalled it something must have broken because I cannot now reinstall.

2) I am running Windows 7.

Here is the output of the .airinstall.log file that is created when I try to install:

"Performing runtime install

UI SWF load is complete

UI initialized

starting user confirmation

Version of this installer: 1.5.3.9130

Installation type: new

starting elevated install

subinstaller: starting install

subinstaller: Scheduling runtime installation operations

subinstaller: uninstall scheduled for 1.0.4, 1.0.6, 1.0.5

subinstaller: Installed Product GUID:  is same:false

subinstaller: Beginning runtime installation

subinstaller: Beginning install

subinstaller: Installing c:\users\buta\appdata\local\temp\air68cc.tmp\setup.msi

subinstaller: Error occurred; beginning rollback: [ErrorEvent type="error" bubbles=false cancelable=false eventPhase=2 text="1603" errorID=0]

subinstaller: Rolling back install of c:\users\buta\appdata\local\temp\air68cc.tmp\setup.msi

subinstaller: Rollback due to error complete

subinstaller: error during install: [ErrorEvent type="error" bubbles=false cancelable=false eventPhase=2 text="1603" errorID=0]

Failed during elevated install: error 0 1603

runtime install entering error state: [ErrorEvent type="error" bubbles=false cancelable=false eventPhase=2 text="1603" errorID=0]

begin quitting"

Here are things I have done to try to fix the problem, to no avail:

1) Uninstalled

2) Used Windows Installer Cleanup

3) Used a registry cleaner to remove all traces of Adobe AIR

4) Tried installing in safe mode

5) Installed with administrator privileges

6) Scoured the internet for advice

I think the problem may lie in a missing DLL or something, as when I uninstalled Adobe AIR last time it was a little messy and I think I may have removed a necessary DLL.  I can't imagine that this would really be a problem, though.

If anyone has advice, it would be VERY much appreciated.