If you trust the website, you can allow Flashplayer to run by clicking on the "Activate Flashplayer" message. If there is no visible area to activate Flashplayer content in the page, look for the plugin icon in the address bar, then click it and, in the message panel that opens, choose "Allow Now".

Does this solve your problem? Let us know.

Separate Issue; Your System Details shows;

Installed Plug-ins

IE Tab 4.0.20130422 ({77b819fa-95ad-4f2c-ac7c-486b356188a9}) IE Tab 2 (FF 3.6+) 5.12.12.1 ({1BC9BA34-1EED-42ca-A505-6D2F1A935BBB})

Are these the same program? Having more than one version of a program may cause issues.

Wesley Branton said

If you trust the website, you can allow Flashplayer to run by clicking on the "Activate Flashplayer" message. If there is no visible area to activate Flashplayer content in the page, look for the plugin icon in the address bar, then click it and, in the message panel that opens, choose "Allow Now". Does this solve your problem? Let us know.

Any pages that're using flash simply don't appear, or appear with a black screen, thus not allowing the "activate flash message". And, there is no plugin icon on flash web pages =/

FredMcD said

Separate Issue; Your System Details shows; Installed Plug-ins IE Tab 4.0.20130422 ({77b819fa-95ad-4f2c-ac7c-486b356188a9}) IE Tab 2 (FF 3.6+) 5.12.12.1 ({1BC9BA34-1EED-42ca-A505-6D2F1A935BBB}) Are these the same program? Having more than one version of a program may cause issues.

Nah, they're two seperate addons, one that enhances the other

Type about:addons<Enter> in the address bar to open your Add-ons Manager. Hot key; <Control>(Mac:<Command>) <Shift> A)

On the left, select Pluging. Set all video plugs to Ask or Always.

Next;

Go to the web page. Once the page is loading, mouse to the address bar and Left click the icon. A window for displaying site information should come up. Select More Information. Now select Permissions. In the menu, find and check the plugins, make sure they are set properly.