The evopress skin doesn't use a picture anymore; The gradient is done purely with CSS3.

If you want a picture there, you have to modify the HTML or the CSS code. You may actually copy paste code from the old version into the new version.

Francois, thanks for the information. I will try further to tweak / replace current css code (style.css) with the old 4.1.7 code.

If not successfull I will have to look for another skin.

style.css (4.1.7) --> in which I replaced the kubrickheader.jpg with my personal picture

/* Begin Typography & Colors */
body {
font-size: 62.5%; /* Resets 1em to 10px */
font-family: 'Lucida Grande', Verdana, Arial, Sans-Serif;
background: #d5d6d7 url('img/kubrickbgcolor.jpg');
color: #333;
text-align: center;
}

#page {
background-color: white;
/* border: 1px solid #959596; */
text-align: left;
}

#header {
background: #73a0c5 url('img/kubrickheader.jpg') no-repeat bottom center;
}

#headerimg 	{
font-size: 1.2em;
text-align: center;
color: white;
}

-------------------------------------------

style.css (5.0.5)

/* Begin Typography & Colors */
body {
font-size: 62.5%; /* Resets 1em to 10px */
font-family: 'Lucida Grande', Verdana, Arial, Sans-Serif;
background: #e7e7e7;
color: #333;
text-align: center;
}
textarea, input, select, option, optgroup, ul.ui-autocomplete, li.token-input-token-facebook, div.token-input-dropdown-facebook {
font: 12px 'Lucida Grande', Verdana, Arial, Sans-Serif;
}

#page {
background-color: white;
text-align: left;
}

#header {
margin: 10px auto 0;
padding: 0;
width: 720px;
overflow: hidden;
-moz-border-radius: 6px;
-webkit-border-radius: 6px;
-khtml-border-radius: 6px;
border-radius: 6px;
}

#headerimg {
font-size: 1.2em;
text-align: center;
color: white;
height: 182px;
background:-webkit-linear-gradient(top, #6aace6, #4280b6);
background:-moz-linear-gradient(top, #6aace6, #4280b6);
background:-o-linear-gradient(top, #6aace6, #4280b6);
background: -ms-linear-gradient(top, #6aace6, #4280b6);
filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#6aace6', endColorstr='#4280b6');
}

Hi, I fixed the problem by re-installation of Evopress source of b2evolution 4.1.7. Cheers Jan.

Please be aware that you may not benefit from 100% of the latest features by using an older version of the skin. Also performance is not as good with the 4.x version.