The file SKIDFBDEC542.DLL has been reported missing for various reasons. Most reports regarding this file are in conjunction with game-cheats, fake software and hackware for different programs.
Apparently, it is requested by a "Facebook account hacker" app, claiming to be able to get you passwords for other peoples facebook accounts. This is not possible, and most likely a scam just to get you to do surveys they get paid for.
We have as yet been unable to locate a verified safe version of this file, and believe that it does not exist.
Typically the user downloads some program, but is confronted with a 'file missing error' after installing. The user is directed directed to a page where supposedly this missing file can be accessed.
This is a typical survey/ad-scam for the page owner to get money without actually providing the promised service. It is also very common (but not always) in these cases that the original 'program' downloaded comes with it's own inbuilt malware that has, at this point, already infected your computer. Our recommendation is to immediately remove the program from your computer and then make sure that your system is safe.