Can't display button icons in JQ Mobile 1.4

Can't display button icons in JQ Mobile 1.4

This was working just fine in earlier versions but after I upgraded to 1.4 it no longer works, but only for my own buttons. That is, the JQM standard buttons (like Back and accordions) display just fine, but in the ones I added (like Help and Settings) the icons are not displayed. I know that the icon file has moved, but where to. Also I suspect the icon names have changed as well, but I am confused by the documentation. Can anyone help?
Here are my included files:

<link href="styles/themes/jquery.mobile.structure-1.4.2.min.css" rel="stylesheet" />    
<link href="styles/themes/jquery.mobile.icons-1.4.2.min.css" rel="stylesheet" />    
<link href="jquery-mobile/styles/images/jquery.mobile.inline-png-1.4.2.min.css" rel="stylesheet" />   
        <link href="jquery-mobile/styles/images/jquery.mobile.inline-svg-1.4.2.min.css" rel="stylesheet" />   
Thanks in advance.
--Alex