While setting up my SQL Server 2008 RTM image, I needed to create a demo using PerformancePoint.
After installing PerformancePoint (by the way, I had to point it to a SQL Server 2005 instance for it's own databases, it didn't like 2008) I went to connect to an Analysis Services 2008 data source. I got an error, something about data source not found. I wasn;t sure if this was going to be a problen with 2008 cubes in general.
After some investigation, I realised the problem was not with connecting to SQL Server, but rather PerfPoints own web service. In IE, I browsed to http://localhost/WebService/PmService.asmx. There was an error message “could not system.web.extension version=1.0.61025.0.“
A couple of articles talked about some workarounds,
http://nickbarclay.blogspot.com/2007/11/pps-data-source-connection-problems.html
http://hassansyed.blogspot.com/2008/02/ms-performance-point-connection-issue.html
But they looked like a bit too much hard work. So I tried installing ASP.NET Ajax 1.0 from
http://www.microsoft.com/downloads/details.aspx?FamilyID=ca9d90fa-e8c9-42e3-aa19-08e2c027f5d6&displaylang=en
and everything is sweet now. PerformancePoint Dashboards working fine connecting to SQL Server 2008 cubes!