Hi Ben,
Welcome to ADO.NET DataSet forum!
I have checked our internal database and found that several related issues about “Failed to merge objects” on DataSet have been fixed on Visual Studio 2008 RTM and Visual Studio 2008 SP1. So, please make sure that you have installed the Visual Studio 2008 SP1 correctly.
Besides, the entry “ctd_vc_BEConnectionString” should be hold as connection string in the web.config file. Please check whether the web.config has any corruption.
If the problem still exists, could you please provide us with more detailed information for further troubleshooting? The detailed repro steps of this issue are really helpful.
Have a nice day!
Best Regards,
Lingzhi Sun
MSDN Subscriber Support in Forum
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