Can't take incremental screenshots while paused.

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Pause the game using the emulator's pause key.
2. Take a screenshot (by pressing the assigned button on Options --> Input --> 
Configure Controllers --> Controller 1).


What is the expected output? What do you see instead?
The screenshot should be taken, instead, nothing happens. 

What version of the product are you using? On what operating system?
VBA RR v22. Win XP SP3.

Please provide any additional information below.
I know you could take a screenshot using the "Tools --> Screenshot Capture" 
option, but that is no good if you want to take lots of sequential screenshots. 

Original issue reported on code.google.com by reyvgm on 29 Oct 2010 at 11:30