ESX and VIX

I'm using the Vix perl API from VMware-vix-1.1.5-109488.i386.tar.gz. and when running findhosttest.pl I get the following:

Failed to get property type for 3010 on handle 0.
Connect failed, 1000 The handle is not a valid VIX object

Does the Physical server configuration need to be changed from default to run the Vix API?

Does the Vix API function on ESX3.5.0 (82663)?

Thanks