Today Microsoft made the FIM 2010 R2 SP1 release available for general download. Read all about the news in SP1 in KB2772429.
I myself ran into a situation at a customer yesterday where the binding redirect for the new version where not applied by the SP1 installer. As described in the KB this happens if some modifications has been done to the configuration files.
Updating the three files
so that the bindingRedirect section had the newVersion=”22.214.171.124″ solved the problem and made the ECMA 2 adapters in the solution start working again. I actually first made the mistake of using 4.1.3114.0 as newVersion, since this is the Product Version of the new Microsoft.MetadirectoryServicesEx.dll file. But this is not the “Build Number” that we are talking about. The Build Number you need to redirect to is the 126.96.36.199 that you can see in the GAC on the Microsoft.MetadirectoryServicesEx.dll.