sftp dolphin <-> Android Could not rename partial file

[capponz]

Hi,
I very much hope that this the right place for my question. If not (prob. more network related) I'm sorry!
I'm trying for quite a time now to connect my smartphone Android Lollipop with my KDE Mint 17.1.
I tried KDEconnect but it came up with errors or empty directories. anyway... then I thought sftp might be a solution.
On the phone I run SSHelper.
When I connect my Notebook with my phone -> dolphin sftp://192.168.20.102:2222 the first error comes up :

Code: Select all

Error: internal error
please send a full bug report at http://bugs.kde.org
Could ot set a timeout

then I get full access. I can create folders -- but! when I try to write into any created directories( sdcard/sdcard1 )
I get the following error:

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could not rename partial file sftp://192.168.20.102:2222/storage/sdcard1/Audio/test.txt.
Please check permission

There's something written i.e. test.txt.part

I think its somehow related to KDE protocolls because it works with Filezilla!
I'd like to use Krusader or Dolphin for accessing my phone.

please advise, thanks a lot