UPDATE: I took the sensor zip from the creating a vizard sensor plugin thread.
http://forum.worldviz.com/showthread.php?t=43
I compiled the Visual Studio solution with the updated sensor.h file (it's in the creating a vizard sensor plugin thread). I was able to compile the sensor solution and it gave me a sensor.dls file.
So I downloaded the template, created a clean .DLS and put it in the plugins folder in vizard. I still get this error:
************************************************** ****************************
** Loading clean_sensor_dls4-18.py
************************************************** ****************************
sensor.dls Worldviz Driver v1.0
** WARNING: 'sensor.dls' can only be used with the Development or Enterprise version of Vizard
** Load Time: 0.05 seconds