I am experiencing the same issue found here: http://help.videoscribe.co/support/discussions/topics/1000037075
Indefinite hang on processing, twice in a row after two good "takes." This is not good, I do expect the tool to work.
Sounds like you need help identifying problems with your scribe.
1) save your project file to the cloud folder and raise a support ticket asking customer support for help (they work monday through friday during UK business hours).
2) save your project as a .scribe file and attach it here if you want help from videoscribe users.
3) if you think the voiceover is the problem, you could attach it here as well.
-Mike (videoscribe user)