I get this same set of entries on the log file if I run the installer file as Administrator or as a common user.
[2012-04-21:15:58:13] Runtime Installer begin with version 18.104.22.1680 on Windows 7 x86
[2012-04-21:15:58:13] Commandline is:
[2012-04-21:15:58:13] No installed runtime detected
I haven't seen this log before. Could you try the following?
1. Download the latest AIR runtime from http://get.adobe.com/air to the root of your C: drive
2. Go to the start menu and type in "cmd"
3. Right click on the "cmd.exe" entry in the start menu and select "run as administrator"
4. In the command prompt, type "cd \". This should have you in "C:\" now.
5. Type "AdobeAIRInstaller.exe"
If I try to download Air to the C:/, I get an error message that I do not have permission to save anything to this location. I switched to the administrator account and tried downloading and saving it the C:/ but Adobe would not even start the download.
I switched back to my main account and downloaded to my User/Ed directory. I tried to run it from CMD, but it would not launch. I tried running it from Windows Explorer by right-clicking on the file name and selecting Run as Administrator. No response.
Is this a problem with my new computer or with Air?
This doesn't sound normal at all. However, you will want your user account to be an "administrator" level to install AIR. But selecting "run as administrator" should have done that. Are you having problems installing any other applications?
No problems with installing other programs, but the system is locking various data files and folders that I downloaded from Carbonite. In a few cases, it does not even have "Ed" or "Ed Administrator" listed as a permissible user when I try to change the security settings on the file or folder.