Hi,
If it is a new installation probably something went wrong in the installation. I recommend a clean installation How to make a clean installation of Netcam Studio
If it has been working before it can be a Windows updates that messed things up. Test this:
-go to C:\Users%username%\AppData\Local\Moonware and delete all.
-go to C:\Users%username%\AppData\Roaming\Moonware and delete all.
-start Netcam Studio again.
If that doesn´t work do a clean installation.
-Henrik