Each time we run the Flex App’s the browser looks for the flash plugin in the Browser’s plugin folder.So the plugin file that is required is npswf32.dll.
This is by default included in the plugin folder of the browsers installation folder, when you install the flash player, but there is a situation where this file missed out sometimes when we go for Browser ‘s new installs .
so at that time the file[plugin] we required [present at the folder “C:WINNTsystem32MacromedFlash“] is missing and need to be put it in the plugin folder of the browser install folder.
Now take the required file[copy it from the path given above] and paste it in the folder plugin folder of the browser install folder.
Now it works file.Enjoy Flexing.