I also ordered the same device on amazon and always get the error "Startup Lua Failed". I made sure that have correct IP address. I also did the test suggested earlier and below are the 2 lines corresponding to the device.
LuaInterface::CallFunction_Startup-1 device XX function lug_startup failed [string "..."]:27: attempt to index global 'iTach' (a nil value) <0x2b731680>
LuImplementation::StartLua running startup code for 17 I_iTachWifi.xml failed <0x2b731680>
I am relatively new to Vera and home automation, but have about 6 devices being controlled and working well. Any help is greatly appreciated (and desperately needed