Cannot connect with OLE DB
The answer is right there on the last line of the error message:


  Sql client not registered


You need to install the SQL Server Client Library on the machine in question.

You can obtain that package from http://go.microsoft.com/fwlink/?LinkID=239648&amp;clcid=0x409

Also, Isolation Level = ReadUncommitted may be problematic if you don't fully understand the implications of ReadUncommitted See http://msdn.microsoft.com/en-us/library/ms173763.aspx