InstantForum.NET v2.9.0SQLServerCentralhttp://www.sqlservercentral.com/Forums/notifications@sqlservercentral.comThu, 24 May 2012 13:11:56 GMT20http://www.sqlservercentral.com/Forums/Topic858658-323-1.aspxI am having the same problem too. Is anyone able to explain what needs to be done here. I am unable to progress with my project as i cannot add any data tables to the data source window. When trying to conenct to the data source get the same error listed above. Please HELP!Tue, 29 Mar 2011 06:52:25 GMTboyeosomohttp://www.sqlservercentral.com/Forums/Topic858658-323-1.aspxthanks for the reply, but, the sdf file, is not readonly?rather, I cannot add it to Visual Studio, as a new data sourceWed, 03 Feb 2010 09:39:02 GMTericvanderhousenhttp://www.sqlservercentral.com/Forums/Topic858658-323-1.aspxeric could it have to do with disk permissions? for example, on my win7 laptop, i cannot write to c:\mydb.sdf, but i have no problem writing to C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Data\mydb.sdfbut on my xp desktop, i can write to either place, mostly because my desktop is runnign with service credentials of a local admin, instead of whatever the default local service or network service account.Wed, 03 Feb 2010 08:45:21 GMTLowellhttp://www.sqlservercentral.com/Forums/Topic858658-323-1.aspxusing SQL Server CE 3.5 with Visual Studio 2008, but, when I add a sdf file, I keeping getting the error "an error occurred while creating the new data source"Wed, 03 Feb 2010 07:30:54 GMTericvanderhousen