Created Unassigned: Wrong DLL in 1.4.0.1 setup [8009]

I've just installed PowerShell Provider BizTalk 1.4.0.1 to create a setup script for a base environment for our local BizTalk Servers.

Creating Hosts and Host Instances went smoothly.
Creating an Adapter resulted in an exception:

```
New-Item : Could not load file or assembly 'BizTalkFactory.Runtime.InteropServices, Version=1.4.0.1, Culture=neutral, PublicKeyToken=e0a9d3e9ac909c12' or one of its dependencies. The system cannot find
the file specified.
At line:1 char:1
+ New-Item "DB2" -TransportType "DB2"
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (:) [New-Item], FileNotFoundException
+ FullyQualifiedErrorId : System.IO.FileNotFoundException,Microsoft.PowerShell.Commands.NewItemCommand
```

After a short research I found that the 1.4.0.1 Installation file contains 2 DLLs with the same size:
BizTalkFactory.PowerShell.Extensions.dll and BizTalkFactory.Runtime.IteropServices.dll.

Checking detail information of "my" version of BizTalkFactory.Runtime.IteropServices.dll showed that it actually is a copy of BizTalkFactory.PowerShell.Extensions.dll....

So it looks like something went wrong creating the installation package...

Is there any chance I can get the "real" BizTalkFactory.Runtime.IteropServices.dll?