Critical transfer error / transfer could not be started

[Wladimir25]

Hi,
Thank you very much for the library!

Plese give me an advice:
Connection is working fine
Directories on the SD card are displayed and can be opened/closed, no problem
For a file transfer up/down I always get: Critical transfer error
Filezilla says: transfer could not be started
What can I do?

Thank you very much in advance
Andreas

ESP32S3
Arduino 1.8.19
ESP 2.0.16
SD_MMC 4bit mode, working fine

[Wladimir25]

Additional Infos:

TYPE I
PASV
Connection management set to passive
Data port set to 50009
STOR preferences.txt

FTP Client says: Transfer failed! Continue anyway?

[fa1ke5]

Try total commander as a client

[Wladimir25]

Hi,
exact the same problem, sorry.

Ftp server waiting for connection on port 21
Client connected!
USER esp32
PASS esp32
OK. Waiting for commands.
SYST
FEAT
CWD /
PWD
TYPE A
PORT 192,168,178,94,235,211
LIST
PASV
Connection management set to passive
Data port set to 50009
PASV
Connection management set to passive
Data port set to 50009
LIST
ftpdataserver client....
File Name = System Volume Information
File Name = Mello1
File Name = Stereo1

CWD Stereo1
PWD
PASV
Connection management set to passive
Data port set to 50009
LIST
ftpdataserver client....
File Name = 89.wav

DELE 89.wav
TotalCommander says: 501 No file name

TYPE I
PASV
Connection management set to passive
Data port set to 50009
RETR 89.wav
TotalCommander says: 501 No file name

Thank you

[Wladimir25]

Hi,
I tried Simple FTP Server from Renzo Mischianti, the Library works.
Thank you for your support.
Regards,
Andreas