[WinError 127] ("The specified procedure could not be found.")

[Kai Wiechen]

Hi,

I am trying to get openslide working using the python interface. I have 
downloaded the latest Windows binaries (64 bit) and placed the folder 
openslide/bin in $PATH. The 
openslide_python-1.1.0-cp34-none-win_amd64.whl was installed within 
WinPython-64bit-3.4.4.1Qt5.

The "import openslide" statement results in:

OSError: [WinError 127] Die angegebene Prozedur wurde nicht gefunden

What is goinng wrong here?

Best regards,

Kai