I still cannot load Adobe Air. I have disabled Windows Installer Logging and tried again, only to fail. Looking at the log file (in %temp% )I get the message "Error 1714. The older version of Adobe AIR cannot be removed. Contact your technical support group. System Error 1612."
Adobe support is unhelpful unless I pay and I am surprised that they have not picked up my difficulty.
Does anybody know how to get rid of an older version of Adobe Air?