Cannot install Adobe Air on Windows 7 (64 bit)

After an apparently succesfully installation of Adobe Air on a new PC with 64 bit Windows 7 operating system, it doesn't works at all. When I'm trying tu run an Adobe Air application or even the uninstaller of Adobe Air I get the message "This application requires a version of Adobe AIR which cannot be found. Please download..." . I've tried to remove all the registry entries and reinstall Adobe AIR but it didn't solve the problem.

The content of the log file is the following

[2011-11-04:07:59:52] Runtime Installer begin with version 2.5.0.16600 on Windows 7 x86

[2011-11-04:07:59:52] Commandline is:

[2011-11-04:07:59:52] No installed runtime detected

[2011-11-04:07:59:55] Relaunching with elevation

[2011-11-04:07:59:55] Launching subprocess with commandline c:\users\tibi\appdata\local\temp\airc74d.tmp\adobe air installer.exe -ei

[2011-11-04:07:59:59] Runtime Installer begin with version 2.5.0.16600 on Windows 7 x86

[2011-11-04:07:59:59] Commandline is: -stdio \\.\pipe\AIR_3156_0 -ei

[2011-11-04:07:59:59] No installed runtime detected

[2011-11-04:07:59:59] Starting silent runtime install. Installing runtime version 2.5.0.16600

[2011-11-04:07:59:59] Installing msi at c:\users\tibi\appdata\local\temp\airc74d.tmp\setup.msi with guid {46C045BF-2B3F-4BC4-8E4C-00E0CF8BD9DB}

[2011-11-04:08:00:02] Runtime Installer end with exit code 0

[2011-11-04:08:00:02] Elevated install completed

[2011-11-04:08:00:05] Got an unexpected fatal error while quitting: [ErrorEvent type="error" bubbles=false cancelable=false eventPhase=2 text="Unhandled exception TypeError: Error #1009" errorID=1009]

[2011-11-04:08:00:05] Runtime Installer end with exit code 5

[2011-11-04:09:33:26] Runtime Installer begin with version 3.0.0.4080 on Windows 7 x86

[2011-11-04:09:33:26] Commandline is:

[2011-11-04:09:33:26] No installed runtime detected

[2011-11-04:09:33:30] Runtime Installer end with exit code 6

[2011-11-04:09:33:55] Runtime Installer begin with version 3.0.0.4080 on Windows XP x86

[2011-11-04:09:33:55] Commandline is:

[2011-11-04:09:33:55] No installed runtime detected

[2011-11-04:09:34:05] Starting runtime install. Installing runtime version 3.0.0.4080

[2011-11-04:09:34:05] Installing msi at c:\users\tibi\appdata\local\temp\aire2bb.tmp\setup.msi with guid {ACEB2BAF-96DF-48FD-ADD5-43842D4C443D}

[2011-11-04:09:34:10] Got an unexpected fatal error while quitting: [ErrorEvent type="error" bubbles=false cancelable=false eventPhase=2 text="Unhandled exception TypeError: Error #1009" errorID=1009]

[2011-11-04:09:34:10] Runtime Installer end with exit code 5

I have no ideea what could be the problem