When I access my networked drives using Helios, it spawns a separate iteration of Network Browser. (I wish it didn't do that--I prefer a fully integrated file manager.) Then, in Network Browser, all attempts to 'save' a file to my phone result in a curt, non-helpful error message: "Download failed!"

There's no explanation, nothing to troubleshoot with, it just fails. All my other file managers [and other apps, like photo managers/editors] successfully save files from and to the exact same locations.

I've tried multiple file sizes/types/locations from and to, all of which failed.

I'm long-pressing on the file I want, which brings up two choices: delete and save; I'm choosing save.