Devexpress aspx controls not styling after publish to different server

Question

I have a few Devexpress aspx controls on a website that look fine on our development server. When I publish the exact same files to the live server, everything works, but none of the controls have any styling.

I have checked the site, in the IE dev tools, and it seems to have a link to only 1 DXR.axd while the dev server has a link to 3. Each one is different.

Don't really know where to begin checking as everything seems identical on both servers, including web.config, see below:

<?xml version="1.0"?><configuration>
  <configSections>
    <sectionGroup name="devExpress">
      <section name="settings" type="DevExpress.Web.ASPxClasses.SettingsConfigurationSection, DevExpress.Web.v10.2, Version=10.2.8.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" requirePermission="false"/>
      <section name="compression" type="DevExpress.Web.ASPxClasses.CompressionConfigurationSection, DevExpress.Web.v10.2, Version=10.2.8.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" requirePermission="false"/>
      <section name="themes" type="DevExpress.Web.ASPxClasses.ThemesConfigurationSection, DevExpress.Web.v10.2, Version=10.2.8.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" requirePermission="false"/>
      <section name="errors" type="DevExpress.Web.ASPxClasses.ErrorsConfigurationSection, DevExpress.Web.v10.2, Version=10.2.8.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" requirePermission="false"/>
    </sectionGroup>
  </configSections>
  <appSettings/>
  <connectionStrings>
    <add name="testConnectionString" connectionString="Server=<test>;User ID=root;Password=password;Database=test" providerName="MySql.Data.MySqlClient"/>
  </connectionStrings>
  <system.web>
    <!-- 
            Set compilation debug="true" to insert debugging 
            symbols into the compiled page. Because this 
            affects performance, set this value to true only 
            during development.
        -->
    <compilation debug="true">
      <assemblies>
        <add assembly="DevExpress.Web.ASPxScheduler.v10.2, Version=10.2.8.0, Culture=neutral, PublicKeyToken=B88D1754D700E49A"/>
        <add assembly="DevExpress.Web.v10.2, Version=10.2.8.0, Culture=neutral, PublicKeyToken=B88D1754D700E49A"/>
        <add assembly="DevExpress.XtraScheduler.v10.2.Core, Version=10.2.8.0, Culture=neutral, PublicKeyToken=B88D1754D700E49A"/>
        <add assembly="DevExpress.Data.v10.2, Version=10.2.8.0, Culture=neutral, PublicKeyToken=B88D1754D700E49A"/>
        <add assembly="DevExpress.Web.ASPxEditors.v10.2, Version=10.2.8.0, Culture=neutral, PublicKeyToken=B88D1754D700E49A"/>
        <add assembly="System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>

                <add assembly="DevExpress.Web.ASPxGridView.v10.2, Version=10.2.8.0, Culture=neutral, PublicKeyToken=B88D1754D700E49A"/>
                <add assembly="System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
                <add assembly="DevExpress.Web.ASPxPivotGrid.v10.2, Version=10.2.8.0, Culture=neutral, PublicKeyToken=B88D1754D700E49A"/>
                <add assembly="DevExpress.PivotGrid.v10.2.Core, Version=10.2.8.0, Culture=neutral, PublicKeyToken=B88D1754D700E49A"/></assemblies>
    </compilation>
    <!--
            The <authentication> section enables configuration 
            of the security authentication mode used by 
            ASP.NET to identify an incoming user. 
        -->
    <authentication mode="Windows"/>
    <!--
            The <customErrors> section enables configuration 
            of what to do if/when an unhandled error occurs 
            during the execution of a request. Specifically, 
            it enables developers to configure html error pages 
            to be displayed in place of a error stack trace.

        <customErrors mode="RemoteOnly" defaultRedirect="GenericErrorPage.htm">
            <error statusCode="403" redirect="NoAccess.htm" />
            <error statusCode="404" redirect="FileNotFound.htm" />
        </customErrors>
        -->
    <httpModules>
      <add type="DevExpress.Web.ASPxClasses.ASPxHttpHandlerModule, DevExpress.Web.v10.2, Version=10.2.8.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" name="ASPxHttpHandlerModule"/>
    </httpModules>
  </system.web>
  <system.webServer>
    <validation validateIntegratedModeConfiguration="false"/>
    <modules>
      <add type="DevExpress.Web.ASPxClasses.ASPxHttpHandlerModule, DevExpress.Web.v10.2, Version=10.2.8.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" name="ASPxHttpHandlerModule"/>
    </modules>
  </system.webServer>
  <devExpress>
    <settings rightToLeft="false"/>
    <compression enableHtmlCompression="false" enableCallbackCompression="true" enableResourceCompression="true" enableResourceMerging="false"/>
    <themes enableThemesAssembly="true"/>
    <errors callbackErrorRedirectUrl=""/>
  </devExpress>
</configuration>

Answer 1

Deploy the "ASPxThemes" assembly (DevExpress.Web.ASPxThemes.vXX.Y.dll) within the server GAC or WebSite Bin folder.

This assembly stores required DevExpress ASP.NET Themes resources.