When attempting to upload an open file, FileZilla goes into an endless loop of errors

[Howard]

Environment:
============
FileZilla v3.5.3. Windows 7 Ultimate, 64-bit. All latest patches installed. Details from "About" page are pasted in below.

Description:
============
Attempting to upload an open file causes FileZilla to go into a possibly endless loop of errors.

Steps to reproduce:
===================
Connect to FTP server via SFTP.
Open file in MS Word. Make an update. Save it. [Leave Word Open]
Using Windows Explorer, drag file into FileZilla interface to upload it.
FileZilla goes into a seemingly endless loop. The status pane shows:
Error: local: unable to open C:\xxxxxxxxx\filename.doc
Error: File transfer failed

I don't recall prior versions of FileZilla having this problem, but I can't be sure. (I just find it hard to believe I've never tried to upload an open file before, accidentally or on purpose.)

Suggestions:
============
-Error should be specific about why it can't upload the file (i.e. file open.)
-Error should ask if you want to retry.
-Error should only occur a maximum number of retries, either set or specified in the preferences.

---

FileZilla Client

---

Version: 3.5.3

Build information:

Compiled for: i586-pc-mingw32msvc
Compiled on: x86_64-unknown-linux-gnu
Build date: 2012-01-08
Compiled with: i586-mingw32msvc-gcc (GCC) 4.2.1-sjlj (mingw32-2)
Compiler flags: -g -O2 -Wall -g -fexceptions

Linked against:

wxWidgets: 2.8.12
GnuTLS: 2.10.4

Operating system:

Name: Windows NT 6.1 (build 7601, Service Pack 1)
Version: 6.1
Platform: 64 bit system

[Bruno Ramos]

I don't have word installed and I cannot reproduce this with files open in other programs.

Huge number of changes since ticket was created, please reopen ticket if issue still in latest version of FileZilla

Thank you.