http://developers.de/blogs/damir_dobric/archive/2011/03/03/cloudtableclient-the-method-firstordefault-is-not-supported.aspxWhen working with CloudTableClient you might get following exception: NotSupportedException “The method 'FirstOrDefault' is not supported.” This exception is caused for example by following example: SyncTableEntity item = ctx.TFiles.FirstOrDefaultenCommunityServer 2008 SP1 (Build: 30619.63)