ALM 12 - connection error, missing dlls?

Hello

I tried to connect to ALM 12 with next vbs script:

Set tdConnection = CreateObject("TDApiOle80.TDConnection")

tdConnection.InitConnectionEx URL

but had an error on second line:
"ActiveX component can't create object" (without naming what object)

I suspect, that there is something wrong with instalation and some DLLs are missing. I think so becasuse I have OTAClient.dll in unusual place - "C:\Users\Administrator\AppData\Local\HP\ALM-Client\localhost\OTAClient.dll" - instead of - "C:\Program Files\Common Files\Mercury Interactive\Quality Center" which is mentioned in many discussioned and is missing in my system. I registered OTAClient.dll manually with regsvr32 command. Without that I had error "ActiveX component can't create object: 'TDApiOle80.TDConnection' ".

Is it normal, that OTAClient.dll is in such place?