There are two possibilities. First, if you are running Chrome, it does not recognize componets of the lab document that includes Flash components. Second, you need to check your file association for files ending in ".htm."
Check to see what mode you are running the program. You can run in general user mode and switch to administrator mode and not see that a license has been installed. Consistently stay in one mode.
Most anti-virus programs have an inclusion list which means that files/folders listed in it will not be examined for potential risks. Enter the name of the file that you anti-virus program is informing you about and put it in the list. An easier way is to put program files (x86)\routersim\*.* in the list.