Can´t Exit from SOAPui

I have Windows 7, 64 bits, and SOAPui 5.2.1.

My problem is, I can´t exit from SOAPui, because the button Exit doesn´t wrong. I Never can exit from SOAPui with the exit button.

I must to exit without saving, and for this reason I can´t save any project.

Please, could you help me ? (I don´t know what happens).

Regards.