ciao a tutti...
sto provando a installare dotnetnuke (versione 4.3) con mysql in locale. Ho scaricato il pluging apposta
per fare andare dotnetnuke su mysql. Ho seguito la procedura descritta nella guida fornita con il pluging
ma mi da sempre errore.
Ho riprovato a fare la procedura varie e l'errore che ora mi esce è questo:

Server Error in '/nuke' Application.
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Object reference not set to an instance of an object.
Description: An unhandled exception occurred during the execution of the current web request.
Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Source Error:

An unhandled exception was generated during the execution of the current web request.
Information regarding the origin and location of the exception can be identified using the exception stack trace below. 

Stack Trace:

[NullReferenceException: Object reference not set to an instance of an object.]
   DotNetNuke.Framework.Reflection.CreateObject(String ObjectProviderType, String ObjectProviderName,
String ObjectNamespace, String ObjectAssemblyName, Boolean UseCache) +465
   DotNetNuke.Security.Membership.MembershipProvider.CreateProvider() +38
   DotNetNuke.Security.Membership.MembershipProvider..cctor() +13

[TypeInitializationException: The type initializer for 'DotNetNuke.Security.Membership.MembershipProvider' threw an exception.]
   DotNetNuke.Security.Membership.MembershipProvider.Instance() +0
   DotNetNuke.Entities.Users.UserOnlineController..cctor() +5

[TypeInitializationException: The type initializer for 'DotNetNuke.Entities.Users.UserOnlineController' threw an exception.]
   DotNetNuke.Entities.Users.UserOnlineController..ctor() +0
   DotNetNuke.HttpModules.UsersOnlineModule.OnAuthorizeRequest(Object s, EventArgs e) +107
   System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +92
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +64

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Version Information: Microsoft .NET Framework Version:2.0.50727.42; ASP.NET Version:2.0.50727.210

come devo fare?