Check box inside datawindow disappeared

Hello,

I am running an application created in PB 10.5 on a Windows Server 2012 R2 machine. The application works fine except that the checkboxes inside my datawindows got disappeared completely. The text along with check box appears correctly but the 'box' is missing. Any idea why this is happening?

Thanks in advance for your help.

Regards,

Arjun.