Fresh Install, New Project, Full of Errors

Hello Firends,

After the fruitfully new installation of the LS 2011, I choose New Project -> Visual Basic Light Switch Application. 

At once unexpectedly the below error occurred:

Error 2 Type argument 'LightSwitchApplication.Application' does not inherit from or implement the constraint type 'Microsoft.LightSwitch.Framework.Server.ServerApplication(Of LightSwitchApplication.Application, LightSwitchApplication.Application.DetailsClass)'. D:LSAppLSAppServerGeneratedArtifactsApplication.vb 32 102 Server

Error 3 Type argument 'LightSwitchApplication.Application' does not inherit from or implement the constraint type 'Microsoft.LightSwitch.Framework.Server.ServerApplication(Of LightSwitchApplication.Application, LightSwitchApplication.Application.DetailsClass)'. D:LSAppLSAppServerGeneratedArtifactsApplication.vb 40 104 Server

Error 5 Type argument 'LightSwitchApplication.Application' does not inherit from or implement the constraint type 'Microsoft.LightSwitch.Framework.Server.ServerApplication(Of LightSwitchApplication.Application, LightSwitchApplication.Application.DetailsClass)'. D:LSAppLSAppServerGeneratedArtifactsApplication.vb 47 103 Server

Error 6 Type argument 'LightSwitchApplication.Application' does not inherit from or implement the constraint type 'Microsoft.LightSwitch.Framework.Server.ServerApplication(Of LightSwitchApplication.Application, LightSwitchApplication.Application.DetailsClass)'. D:LSAppLSAppServerGeneratedArtifactsApplication.vb 79 112 Server

Error 7 Type argument 'LightSwitchApplication.Application' does not inherit from or implement the constraint type 'Microsoft.LightSwitch.Framework.Server.ServerApplication(Of LightSwitchApplication.Application, LightSwitchApplication.Application.DetailsClass)'. D:LSAppLSAppServerGeneratedArtifactsApplication.vb 87 111 Server

Error 8 Type argument 'LightSwitchApplication.Application' does not inherit from or implement the constraint type 'Microsoft.LightSwitch.Framework.Server.ServerApplication(Of LightSwitchApplication.Application, LightSwitchApplication.Application.DetailsClass)'. D:LSAppLSAppServerGeneratedArtifactsApplication.vb 95 110 Server

Error 4 Type argument 'LightSwitchApplication.Application' does not inherit from or implement the constraint type 'Microsoft.LightSwitch.Framework.Base.Application(Of LightSwitchApplication.Application, LightSwitchApplication.Application.DetailsClass)'. D:LSAppLSAppServerGeneratedArtifactsApplication.vb 46 133 Server

Error 1 Type 'LightSwitchApplication.DataWorkspace' is not defined. D:LSAppLSAppServerGeneratedArtifactsApplication.vb 17 184 Server

Error 9 Option Strict On disallows implicit conversions from 'LightSwitchApplication.Application' to 'Microsoft.LightSwitch.Server.IServerApplication'. D:LSAppLSAppServerGeneratedGeneratedArtifactsApplication.vb 24 20 Server Generated

Error 11 Option Strict On disallows implicit conversions from 'LightSwitchApplication.Application' to 'Microsoft.LightSwitch.IModule'. D:LSAppLSAppServerGeneratedGeneratedArtifactsApplication.vb 39 20 Server Generated

How can I set resolve this matter?

Thank you very much.