FTP works from PC but not from Tablet

[mito]

Hi,
I have successfully rooted my TV and I can access a connected USB-Drive via ftp from my PC using Filezilla. The path is "/dtv/usb/sda1".
Now I thought it would be a good idea to delete already viewed files directly on the HDD via my Sony XTZ Tablet. As a filemanager I use Solid-Explorer.
I can connect to the TV and see the directory tree, but I can't enter to the directory above. See screenshots - translation for the error-message: "Can't search "/dtv". An unknown error occured!"
Some directories work but some not. Where is the problem?

[zoelechat]

It must be a solid explorer bug (tried on my phone and got the exact same error message)
With another client (e.g AndFTP, ES explorer...) it works without problem...

[mito]

O.K. I will test another client and give the developer of solid explorer a hint.

[mito]

Not only Solid Explorer related. "Turbo FTP client" doesn't work either.
Now, I have ES Explorer on the tablet and it can connect to the TV.
Maybe it is a problem with the negotiation.

[zoelechat]

Using Solid Explorer, if you try to set /dtv/usb as FTP "root" folder, you have a different error message which is slightly more helpful/explicit than "unknown" :

Screenshot_2013-11-29-14-21-18.jpg

Maybe a clue

[mito]

Whatever that means