Can't write anything to mounted encfs volume in 4.4.4 (KitKat)

[ghost]

On my Moto G with ES-Explorer or from K-9 I try to save files in a successfully mounted encfs volume, which always fails with error message "/sdcard/csh.cryptonite/mnt/[fname]: open failed:: EEXIST (File exists)"(ES Explorer) or "Attachment could not be saved..." (K-9). Cryptonite version is 0.7.17

[pvshvp-oss]

Facing a similar problem with 4.2.1 Jellybean

[ka223]

I have the same problem on android 4.2.2, kitkat, 5.1.
The encfs volume is created with paranoid mode.
Cryptonite (PlayStore) 0.7.17

Is cryptonite working somewhere?
Need some help!