NSButton is not visible in os x version 10.10.5

I am new in mac application development .I have one project where i need to maintain that .Application created on os x version 10.5 it is call application in that ever button working and visible but when i run the project on updated mac os x10.10.5 version button get hide . NSbutton is there but button background is not visible .all image file is present in the source file as well. even it is not showing me any waing on setting image on button . Same things is working lowest version of Mac(v:-10.5)

Is that any changes is need be do according to current version os x 10.10.5

Thanks in advance