Image capture does not work on Linux

What steps will reproduce the problem?

1. Install any game
2. Install dbox
3. Drop the game into dbox and such
4. Start the game via dbox
5. Press Ctrl-F5 and observe that no capture file was made.

What is the expected output? What do you see instead?

A capture file should be available for use as an icon. Currently, dbox 
recommends to use the aforementioned key combination to capture an image. I.e., 
no image is created. This is confirmed by the attached log file.

What version of the product are you using? On what operating system?

Linux Mint 16 32-bit, dbox 2.3, DosBox 0.74.

Please provide any additional information below.

Note that capture directories are created. In my case there were 4 of them in 
the end, after I tried to create icons in several games:

$ ls ~/.dbox/captures
246277  647728  92309  931273

Original issue reported on code.google.com by alexande...@gmail.com on 21 Feb 2014 at 5:29

mthomason12 / dbox

Image capture does not work on Linux #51