NN workflow server configuration fails on Windows 10 if .ilastikrc file does not exist

[k-dominik]

Describe the bug

Saving the server configuration in the NN workflow will fail on Windows if C:\Users\<UserName>\.ilastikrc does not exist.

Error message/traceback

ERROR 2020-11-25 11:26:23,903 excepthooks 8420 8664 Unhandled exception in thread: 'MainThread'
ERROR 2020-11-25 11:26:23,906 excepthooks 8420 8664 Traceback (most recent call last):
  File "C:\Program Files\ilastik-1.4.0b8\ilastik-meta\ilastik\ilastik\applets\serverConfiguration\serverListWidget.py", line 129, in submit
    self._conf_store.store(self._data)
  File "C:\Program Files\ilastik-1.4.0b8\ilastik-meta\ilastik\ilastik\applets\serverConfiguration\configStorage.py", line 132, in store
    with open(self._dst, 'w+') as out:
PermissionError: [Errno 13] Permission denied: 'None'

Reference:

image.sc forum post

Desktop (please complete the following information):

• ilastik version: 1.4.0b8
• OS: Windows 10

[imagesc-bot]

This issue has been mentioned on Image.sc Forum. There might be relevant details there:

https://forum.image.sc/t/ilastik-neural-network-classification-workflow/45821/2