Clueless automation question

Ok, I'm trying to get to cdj automation from cscript.exe, and I'm having no luck. I'm not very knowledgeable about WSH, so forgive me if I'm just being stupid. Here's the simple code:

dim OBJcdj
dim result
Set OBJcdj=CreateObject("SLINKX.SlinkxCtrl.1")
result=OBJcdj.SendEx("cdj:playlist_play")
Set OBJcdj = nothing

The object gets created, but the SendEx generates a "catastrophic error" (!) and the command doesn't happen. Am I missing something? CDJ is loaded at the time, and using the Slinkx interface, and everything seems normal.

Any help is much appreciated...

Thanks!
-Brooks