New Version of Flash Player Won't Install Properly

[PleaseHelpMeQuick]

Cannot install new version of Adobe Flash Player. Windows 7, 32 Bit. I use Firefox. Firefox is updated. Old version was working fine. Tried to install new because old one was slow and I received prompts to update. Uninstalled old one. Now, I cannot watch anything because every time I try to install the new version, I keep getting a message saying that I cannot install more than one instance of it, and that it is already open. It is not. I am confused. How do I fix this. Yes, plug-ins are allowed. I tried to connect to the part that said to try for a different computer, and chose Windows and Firefox. Still, the same problem. Please help, I am on the verge of tears.

[PleaseHelpMeQuick · Accepted solution]

Never mind, I chose this option:

http://fpdownload.macromedia.com/pub/flashplayer/latest/help/install_flash_player.exe

It finally allowed me to install. It is working. Adobe, I am disappointed that this update was so frustrating to install. Shame on you.