Hi guys,
the message "unable to create filter graph" means that the directshow decoder involved to decode that videoclip has been removed from the system or is locked from an unfriendly antivirus app. There are some antivirus app (Eset, Avast and AVg) that every day are reporting a new false positive in our code and they lock some dlls or executables preventing the execution without a valid reason.
We recomend strongly to replace these Antivirus app with one certified like Avira (free or commercial are both valid alternatives) and your PC will be faster and responsive.
best regards
Roberto Castellano