ProviderIncompatibleException was unhandled by user code

Yesterday I set the Visual Studio project up, pressed F5 and I was away (didn't go for the SQL table setup, just simple).

Today I tried to run it again, I first got:

Access to the path 'C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\a450bf71\e95f9f89\Nop.Plugin.DiscountRules.BillingCountry.dll' is denied.

So to resolve that I deleted the folders under C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root (which it permitted me to, including the a450bf71 folder).

I then tried to debug again, and received:

ProviderIncompatibleException was unhandled by user code

System.Data.ProviderIncompatibleException was unhandled by user code
  Message=The provider did not return a ProviderManifestToken string.
  Source=System.Data.Entity
  StackTrace:
       at System.Data.Common.DbProviderServices.GetProviderManifestToken(DbConnection connection)
       at System.Data.Entity.ModelConfiguration.Utilities.DbConnectionExtensions.GetProviderInfo(DbConnection connection, DbProviderManifest& providerManifest)
       at System.Data.Entity.DbModelBuilder.Build(DbConnection providerConnection)
       at System.Data.Entity.Internal.LazyInternalContext.CreateModel(LazyInternalContext internalContext)
       at System.Data.Entity.Internal.RetryLazy`2.GetValue(TInput input)
       at System.Data.Entity.Internal.LazyInternalContext.InitializeContext()
       at System.Data.Entity.Internal.InternalContext.Initialize()
       at System.Data.Entity.Internal.InternalContext.GetEntitySetAndBaseTypeForType(Type entityType)
       at System.Data.Entity.Internal.Linq.InternalSet`1.Initialize()
       at System.Data.Entity.Internal.Linq.InternalSet`1.get_InternalContext()
       at System.Data.Entity.Infrastructure.DbQuery`1.System.Linq.IQueryable.get_Provider()
       at System.Linq.Queryable.OrderByDescending[TSource,TKey](IQueryable`1 source, Expression`1 keySelector)
       at Nop.Services.Tasks.ScheduleTaskService.GetAllTasks() in D:\Projects\WebtechyWebsite\WebtechyPCShop\Libraries\Nop.Services\Tasks\ScheduleTaskService.cs:line 63
       at Nop.Services.Tasks.TaskManager.Initialize() in D:\Projects\WebtechyWebsite\WebtechyPCShop\Libraries\Nop.Services\Tasks\TaskManager.cs:line 40
       at Nop.Web.MvcApplication.Application_Start() in D:\Projects\WebtechyWebsite\WebtechyPCShop\Presentation\Webtechy.Nop.Web\Global.asax.cs:line 63
  InnerException: System.Data.SqlClient.SqlException
       Message=A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)
       Source=.Net SqlClient Data Provider
       ErrorCode=-2146232060
       Class=20
       LineNumber=0
       Number=-1
       Server=""
       State=0
       StackTrace:
            at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection)
            at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning()
            at System.Data.SqlClient.TdsParser.Connect(ServerInfo serverInfo, SqlInternalConnectionTds connHandler, Boolean ignoreSniOpenTimeout, Int64 timerExpire, Boolean encrypt, Boolean trustServerCert, Boolean integratedSecurity)
            at System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo serverInfo, String newPassword, Boolean ignoreSniOpenTimeout, TimeoutTimer timeout, SqlConnection owningObject)
            at System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(ServerInfo serverInfo, String newPassword, Boolean redirectedUserInstance, SqlConnection owningObject, SqlConnectionString connectionOptions, TimeoutTimer timeout)
            at System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(SqlConnection owningObject, TimeoutTimer timeout, SqlConnectionString connectionOptions, String newPassword, Boolean redirectedUserInstance)
            at System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, Object providerInfo, String newPassword, SqlConnection owningObject, Boolean redirectedUserInstance)
            at System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection)
            at System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnection owningConnection, DbConnectionPool pool, DbConnectionOptions options)
            at System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject)
            at System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject)
            at System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject)
            at System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection)
            at System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory)
            at System.Data.SqlClient.SqlConnection.Open()
            at System.Data.SqlClient.SqlProviderServices.UsingConnection(SqlConnection sqlConnection, Action`1 act)
            at System.Data.SqlClient.SqlProviderServices.UsingMasterConnection(SqlConnection sqlConnection, Action`1 act)
            at System.Data.SqlClient.SqlProviderServices.GetDbProviderManifestToken(DbConnection connection)
            at System.Data.Common.DbProviderServices.GetProviderManifestToken(DbConnection connection)
       InnerException:

Throw on line 63 of ScheduleTaskService.cs which is:

query = query.OrderByDescending(t => t.Seconds);

Would attach an image if I could ...

Regards,

Ben