I had the SQL Server 2008 dlls, and I installed SQL Server 2008R2 Feature Pack. Rather than putting them in Program Files/105/SDK
, it put them in Program Files/100/SDK
and overwrote my 2008 SMO dlls.
There are some slight differences, and I need to get the 2008 dlls, at least temporarily, but I cannot find where to get them.
Try here. This is for SQL 2008 SP2 so hopefully should have what you're after
HTH, Nathan