Camera Labs

I've got dual monitors, with the left monitor designated as the main display. When I have Photoshop open on the left monitor, browsing in the mini bridge, the previews open in the right monitor. I never used to have this problem, and I can't seem to find a setting for it anywhere. Is there some way to change this so the preview will open on the left monitor?

EDIT: I just checked for and installed updates, and now the preview works properly. I don't know why, and I'd still like to know if this is a setting I can control.

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Body: Canon Rebel XS, Canon EOS 7D
Lenses: Sigma 17-70mm f2.8-4.0 OS HSM DC Macro, Canon EF-S 18-55mm f3.5-5.6 IS II, Canon EF 50mm f1.8 II, Canon EF-S 10-22mm f3.5-4.5 USM, Canon EF 85mm f1.8 II USM