I just found out how to get this fixed. This problem has been killing me for months. I read somewhere (forgive me for not copying the link) on how to fix this.

If you have spyware blaster...Under Tools, is a tab called "Flash Killer." In here there is a check box that says "Disable and Block Macromedia Flash..." Uncheck this box and close out of the program. All of your Flash should start working again. If you have uninstalled the program, go download it again and reinstall. I learned that this blocking may remain even after the program is uninstalled.

You might consider upgrading your Flash Player to the latest version, if you aren't there already. There are +'s and -'s to the upgrade...

Hope this helps. Got me out of a very frustrating situation.