Disconnected from server: ECONNABORTED - Connection aborted

[AndiDan]

I am running Filezilla Client 3.1.4.1 on Mac OS-X
Attempting to upload .zip file (28mb) to directory on my website host
upload completes to between 80 and 95% complete, stops and I
get

Error: Disconnected from server: ECONNABORTED - Connection aborted

filezilla then restarts the upload (at about 40%). I can see the file in my host directory but it's not the complete file (approx 12mb). It continues to do this.

Transfer mode is set at passive
I have tried it with and without "Send FTP Keep Alive Commands" - makes no difference.
default action is set to resume

I have used this on and off for the last couple of years with a similar issue but setting the "Keep alive' command has normally sorted this out but this is the largest file I've attempted to upload.

Please find below copy of sample script:

Status: Resolving address of ftp.s.com
Status: Connecting to 208.187.218.94:990...
Status: Connection established, initializing TLS...
Status: Verifying certificate...
Status: TLS/SSL connection established, waiting for welcome message...
Response: 220 FTP Server Ready
Command: USER *
Response: 331 User name accepted, password required.
Command: PASS
Response: 230-Welcome *
Response: 230
Command: PBSZ 0
Response: 200 Protection Buffer Size set: 0.
Command: PROT P
Response: 200 Protection Levet set: P.
Status: Connected
Status: Starting upload of /ANDI'S DB/Websites/The Scrapbooker/ACTUAL PRODUCTS/PAPER KITS/MK0109 Banyan Tree/MK0109 Banyan Tree.zip
Command: CWD /download
Response: 250 CWD command successful.
Status: Retrieving directory listing...
Command: TYPE I
Response: 200 Type set to I.
Command: PASV
Response: 227 Entering passive mode (208,187,218,94,226,128).
Command: LIST
Response: 150 Opening ASCII mode data connection.
Response: 226 Transfer complete.
Command: PASV
Response: 227 Entering passive mode (208,187,218,94,226,131).
Command: APPE MK0109 Banyan Tree.zip
Response: 150 Opening BINARY mode data connection for MK0109 Banyan Tree.zip.
Error: Disconnected from server: ECONNABORTED - Connection aborted

Any assistance would be gratefully received.

[AndiDan]

As an additional note - I have just uploaded several 1MB files with no errors at all...

[Tim Kosse]

There's some broken router and/or firewall between you and the server that silently drops the control connection.

Uninstall all firewalls and plug your computer directly into your modem. Do the same on the server if needed. Then the error will be gone.

[AndiDan]

Replying to codesquid:

There's some broken router and/or firewall between you and the server that silently drops the control connection.

Uninstall all firewalls and plug your computer directly into your modem. Do the same on the server if needed. Then the error will be gone.

even
I haven't a clue where to start with something like this - I don't have a server!

[Tim Kosse]

But you are connecting to one. Contact the server administrator if needed.