This is only a warning to inform you that a file that you are packaging with your application cannot determine its dependency.
The macromedie (adobe) flash player that you are using is also a problem in the sense that it has been deprecated by Adobe, mainly around the age of the component and security issues. You should move away from this control to another. There are plenty more that is more advanced and developed than this old component, some user pc's might even block the player as has been found as can be seen HERE
Adobe Flash is a deprecated multimedia software platform used for production of animations, rich Internet applications, desktop applications, mobile applications, mobile games and embedded web browser video players
for some alternatives.