Anything stuck in the print queue?
I don't believe so. Other Adobe CS4 products open the print box just fine. Seems to just be with the 64bit PS.
Does PS have its own printer queue?
Sorry. I should have seen the last sentance about 32 abd 64bit.
What orinter are you using? Any chance it has automatically updated a driver? Check the driver's date in Device Manager (if Windows). I don't know what platform you are using. Anyway... a new driver might have 64bit compatability issues.
Anything of use here?
Have you tried resetting Photoshop Preferences?
Resetting just the 64bit PS preference file fixed everything!
Not sure what I did to make it freak out like that.