Creating termbase in a VBScript

I created a SDL multiterm file by exporting the terms from Passolo 2016.  Passolo created an xml (terms) and an xdt (format definition) file. When I create the termbase interactively with the definition file and then import the terms, there are no problems.
Now I tried to do this in a vbscript:

dim oMT
set oMT = CreateObject("MultiTermIX.Application")
Dim oLocalRep
Set oLocalRep = oMt.LocalRepository
Call oLocalRep.Termbases.New("Test1", "Description","d:\Passolo.xdt", "d:\Passolo.sdltb")

When I run this script, I always get an access violation.
     Error type: ACCESS VIOLATION
     Error address: 00008925
     Module name:MultiTermMtServerConnector.dll

Any ideas?