If you are developing a .NET/ASP.net solution using ADOMD.NET locally, and everything works great, and you go to release to a production server and end up with this error:
Could not load file or assembly ‘Microsoft.AnalysisServices.AdomdClient, Version=9.0.242.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91’ or one of its dependencies. The system cannot find the file specified.
You need to install the “Feature Pack for Microsoft SQL Server 2005” which you can find here: http://www.microsoft.com/downloads/details.aspx?FamilyID=50b97994-8453-4998-8226-fa42ec403d17&DisplayLang=en
Steve Novoselac's Blog 