strange ".bmp" screen between trials

Hello,

We're showing video stimuli followed immediately by instructions for a lexical decision. As soon as the video ends, there's a brief flash of blank screen showing ".bmp" in small letters before the next screen. It's hard to notice because it's so fast, but participants might notice it after a few trials. Any clue what that's about?

Thanks

That usually means DirectRT is displaying the name of an image file that is being requested in the input file but is not located in the [I]stim[/I] folder. Is that a possibility in your case?