Getting build errors in Visual Studio when you try to use AxLabels in your markup? You are probably missing the AxLabel expression type in your web.config. Modify your web.config to include the expressions as below. They are in the <system.web><compilation> node. The following was copied from the web.config of the root EP virtual directory:
<expressionBuilders>
<remove expressionPrefix="Resources" />
<add expressionPrefix="Resources" type="Microsoft.SharePoint.SPResourceExpressionBuilder, Microsoft.SharePoint, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" />
<add expressionPrefix="SPHtmlEncodedResources" type="Microsoft.SharePoint.SPHtmlEncodedResourceExpressionBuilder, Microsoft.SharePoint, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" />
<add expressionPrefix="SPSimpleFormattingEncodedResources" type="Microsoft.SharePoint.SPSimpleFormattingEncodedResourceExpressionBuilder, Microsoft.SharePoint, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" />
<add expressionPrefix="AxLabel" type="Microsoft.Dynamics.Framework.Portal.UI.Labels, Microsoft.Dynamics.Framework.Portal, Version=5.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
<add expressionPrefix="AxDataSet" type="Microsoft.Dynamics.Framework.Portal.UI.AxDataSetExpressionBuilder, Microsoft.Dynamics.Framework.Portal, Version=5.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
<add expressionPrefix="AxEnum" type="Microsoft.Dynamics.Framework.Portal.UI.AxEnumExpressionBuilder, Microsoft.Dynamics.Framework.Portal, Version=5.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
<add expressionPrefix="AxEDT" type="Microsoft.Dynamics.Framework.Portal.UI.AxEDTExpressionBuilder, Microsoft.Dynamics.Framework.Portal, Version=5.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
</expressionBuilders>
Replatforming Guide: Pros, Cons, and Impact
11 months ago