Inventor Worker "Apprentice"

Hi to all

Does anyone have experience with Inventor Apprentice as worker?

I have:

• installed Inventor View 2014 with SDK 64bit on a windows server 2012 R2. I can start "D:\Autodesk\Inventor View 2014\Bin\InventorView.exe"
• in Worker Agent Administration a Inventor Worker configured.
• ran the inventor2pv_config.exe and selected "Start in Apprentice Server Mode"
• in the <Setup_directory> (D:\ptc\inventor2014_worker) all the necessary files where createt

When starting the INVENTOR:1 worker i have following error in worker_0.log:

inventor2pv Error:70001: Failed to Start Apprentice Server Application [-2147221164]

Unfortunately I can not find anything in the PTC Knowledge Base

thank you very much

daniel