Run Qt - gui application on Raspberry PI

[mrdebug]

Hi. A Qt program does not run on raspberry PI. If I try to execute it from a console I obtain a flash (I see a rectangle for 0.5 second.) and this error:

@pi@raspberrypi ~ $./ComputerVisionStudio
QXcbConnection: XCB error: 165 (Unknown), sequence: 150, resource id: 0, major code: 149 (Unknown), minor code: 20
^C

pi@raspberrypi ~ $
@

After that I have to do crtl-c to terminate it.
If I connect to raspberry PI from a pc with ssx -X I can run the application without any problem.

Have you got any idea?

[mrdebug]

Very strange! If I run the application with sudo the application works!