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Screensize: 640 x 480 800 x 600 1024 x 768 1280 x 1024 UserName: Password: Format Mode: Basic  Help  Prompt  Format: Font Andale Mono Arial Arial Black Book Antiqua Century Gothic Comic Sans MS Courier New Georgia Impact Lucida Console Script MT Bold Stencil Tahoma Times New Roman Trebuchet MS Verdana   Size 1 2 3 4 5 6   Color Black Red Yellow Pink Green Orange Purple Blue Beige Brown Teal Navy Maroon LimeGreen Message: * HTML is OFF * Forum Code is ON Smilies [quote][i]Originally posted by djp16[/i] [br]I'm having an issue with PTB 2.54 in the 3T. It's difficult to diagnose because sometimes it occurs, and sometimes it doesn't. Problem: The initial Screen of my program displays correctly and waits for a key press to begin the experiment. Upon key press (initially, but then even before key press) the PTB Screen minimizes while program continues to run (in a minimized window?). For some reason a matlab Figure window is also generated. I thought it might be a button box issue, maybe a sticky button or something, or sticky button on the keyboard? My program to give participants practice with the paradigm worked fine twice before the experiment, once before the participant arrived and once for the participant, and worked the night before, as did my experiment program. But Wednesday my programs have failed as described above, and have begun to run without waiting for the requisite key press. I've subsequently tried the same program in the BIAC computer room and it works there. Has anyone else had this or a similar issue of PTB Screens minimizing? Thanks, david [/quote]   Check here to include your profile signature. Check here to subscribe to this topic.