Scanning - Acquire into - Files have no extension

[gabrieleliot]

I have been using XnView as a batch scanner for the past couple of weeks.

My process:
File->Select TWAIN Source
File->Acquire into
Format BMP

At first everything went without incident.

However, for the past couple of days there has been a problem. The files that are scanned don't have an extension anymore. Whereas before my files would be:

Epson007.bmp
Epson008.bmp
etc.

Now they are extensionless:
Epson007
Epson008

File explorer has show file extensions selected, it's not that. No thumbnails appear but when I manually add the extension in file explorer thumbnails appear.

I don't think I changed any options in XnView, though it was updated via a Ninite installer.

Trying to fix this, I tried changing the filename from "Epson" to "Epson.bmp" in the Batch scanning options, but that doesn't work. It just produces a file like "Epson.bmp007" with no extension.

Running Version 2.11 (Nov 20 2013)

Any ideas or options to change to fix this behavior?

Thanks in advance for your help!

[xnview]

Please update to the 2.12