Flash Player Instillation for Mac 10.7.5 failed repeatedly

I am trying to install the Adobe Flash Player on my Mac computer. It is a OS X 10.7.5 operating system. I have made several attempts to do this. I can download the installer but every time I try to install it stalls at 33%. I have tried uninstalling the program and all files and starting from scratch and I end up with the same results. I have checked that my plugs ins are enabled and they are. I am beyond frustrated! Please Help!