No problem, it's let me know if I can be of assistance. You may also want to make sure that your webcam driver is up to date. I know that Windows has had some updates recently and if you have not turned off updates, then it is possible the you also need to update your drivers. I am assuming you are using windows.
I run most of my programs on OS X, but do have windows and linux in the lab environment.
Does your webcam work outside of mediasignage software using Skype for instance?