Please find attachment screenshot for DLL missing for silver

Question

Error :-&nbsp;<pre id="pre543184" style=" 6px; normal; font-size: 9pt; font-family: Consolas, 'Courier New', Courier, mono; 1px solid #fbedbb; tab-size: 4; word-wrap: break-word; word-break: break-word; 0px; overflow: auto !important; background-color: #fbedbb;">You can<span style=" 0px; 0px; color: #800080;">'</span><span style=" 0px; 0px; color: #800080;">t add a references to DevExpress.Xpf.LayoutControl.v11.1.dll as it was not built again silverlight runtime.Silverlight project will only work with Silverlight assemblies.</span></pre>