Yes that's it. I even installed the program once again to a different file system location and started with an empty ini file. After adding the first network calendar message "proxy settings" appears again. I would like to know to which proxy the program tries to connect.
Even in the debug log you find nothing: empty proxy settings, no info about the error just:
14:58:20: [0:16:38.968] DEBUG: Stopped desktop monitoring.
14:58:20: [0:16:38.968] DEBUG: Refresh step 0
14:58:21: [0:16:39.531] cookyr-public-like-bmv: Downloading:
cookyr.de/webcal/publish.php/__public__.ics
14:58:22: [0:16:40.687] cookyr-public-like-bmv: Result: (7) 0 Unable to connect to the server. Make sure that your network is working and that your firewall is not blocking the connection..
14:58:22: [0:16:40.687] cookyr-public-like-bmv: Downloading:
cookyr.de/webcal/publish.php/__public__.ics
14:58:22: [0:16:40.687] cookyr-public-like-bmv: Result: (5) 0 Unable to resolve the proxy. Verify that your proxy settings are correct..
14:58:32: [0:16:51.453] DEBUG: CWindowImplWin32::OnMouseEvent() mouse enter
Debug log will come nevertheless.