After target display mode, iPhoto reports an error, "The current screen resolution is not optimal for iPhoto."

I have the 27-inch (late 2009) iMac with mini-Display port input. Whenever I return from Target Display Mode, I get the attached error message and iPhoto becomes unresponsive (the window is still active, but clicking on it produces the error/warning system sound), I have to Force Quit it. The current screen resolution is not optimal for iPhoto (sometimes the error message is a little off the screen in the lower left and only the top of the window can be seen. This also seems to affect iTunes at the same time (by resizing the window to be super small), but without the error message or unresponsiveness.
Has anyone else gotten this problem, and or might know of a fix?

Yes, I have the same problem.  I have checked the resolution in Sysyem Preferences - display and it is properly set to the highest resolution (which is recommended).  I have no idea why this is ocurring but it is annoying.

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