a small bug with a big impact. During development of the stand alone installers the (empty) file __init__.py in the folder sen2cor-2.4.0\sen2cor was removed as it affected the installation via the stand alone installer. However, in the Anaconda Version it seems to be essential. Copy the (empty) file __init__.py from e.g. the cfg folder back into the sen2cor directory and restart with python setup.py install from the top level directory (sen2cor-2.4.0). After that, the installation shall run through. However, due to numerous other issues with anaconda we recommend the installation of the stand alone installer, as you might have already noticed. Tomorrow we will update the Anaconda installation with the fix. Sorry for the trouble.