A google search of the problem suggested it may be an error related to the number of times I can reinstall this product due to licensing issues.
Absolutely not. You are misinterpreting things. The activation check never happens when just running the installer, only much later. It means what it says - there is another "install" pending/ active on your system, meaning somewhere there is an (invisible) process still blocking things. Either way, since you haven't provided any real technical info, we can't advise specifically. if you are on Windows, you may want to check your task manager and terminate any setup.exe and msiexec.exe processes plus potentially may need to manually fix/ delete some registry keys. For anything beyond that you will have to be much more specific.
Mylenium