Re-catches DownloadErrorsKraken

Maybe this time it does it right.
Closes #368.
CmdLine: Tweaked message displayed on download failure.

Closes #368.
Adjusts #535.
Merge branch 'cmdline_download_fix_535_adjust' into release-v1.2

* cmdline_download_fix_535_adjust:
  CmdLine: Tweaked message displayed on download failure.
  Re-catches DownloadErrorsKraken