Hi Markus,
ticket already open 
.
In the meanwhile (during creating trace file for ticket):
- Problem seems to be related to ASCII characters > 128, same error message for '§' and 'ä'.
- I got different error messages for different kernel versions:
- 7.21: Permission denied
- 7.42: handshake with saprouter
The connection string is read from the app.config, which is encoded in UTF-8.
I would not expect encoding problems at this place.
I am not so sure about the saprouttab and saplogon.ini.
Maybe NCO do it right and SAP Router, SAPGUI and OCX do it wrong in the same manner, but therefore it worked.
Best regards,
Tibor