Uploaded file doesn't show

I uploaded an MP4 file to one of my folders via the SmartFTP software and it appears in that folder as I can see in SmartFTP. However, when I go to this folder through any browser, I see the whole list of files---except for this file.

I already successfully uploaded about 100 of these files, but this last behavior is recent. Nothing I upload nowadays can be accessed via a browser.

Does anyone know why, please?

Thanks a lot, Mike

Please post the system information from the menu: help->About "System Information" dialog.


Please post the system information from the menu: help->About "System Information" dialog.

Here it is, my dear angel:

+- System -----------------------------
Microsoft Windows 7 Ultimate Edition
Service Pack 1 (Build 7601)

CPU Speed : 2806 MHz
Total Memory : 6135 MB
Free Memory : 3937 MB

+- SmartFTP ---------------------------
Version : 4.0.1145.0
Time Stamp : 2010-10-28 00:28:15
Platform : x64
Id : 400055598
Maintenance : 2012-09-20
Days in use : 260

+- Language ---------------------------
en-US

+- Internet Explorer ------------------
Version : 9.0.8112.16421

+- Winsock ----------------------------
Winsock : 2.2