Nazdar, kdyz zapnu visual studio a dam new project a vyberu windows forms aplication (mozna je to jinak, pisu zpameti) tak mi to hodi chybu:

at Microsoft.VisualStudio.Designer.Interfaces.IVSMDCodeDomProvider.get_CodeDomProvider()
at Microsoft.VisualStudio.Shell.Design.Serialization.CodeDom.CodeDomDocDataAdapter.get_Provider()
at Microsoft.VisualStudio.Shell.Design.Serialization.CodeDom.CodeDomDocDataAdapter.get_CompileUnit()
at Microsoft.VisualStudio.Design.Serialization.CodeDom.VSCodeDomDesignerLoader.PerformLoad(IDesignerSerializationManager serializationManager)
at Microsoft.VisualStudio.Design.Serialization.CodeDom.VSCodeDomDesignerLoader.DeferredLoadHandler.Microsoft.VisualStudio.TextManager.Interop.IVsTextBufferDataEvents.OnLoadCompleted(Int32 fReload) 

Ve visual studio c# mi to nedela, zkousel sem preinstalovat SQL compact 3.5 a nic... nemuze to byt tim ze sem nainstaloval xampp ten ma vlastni sql tak jestli to neni nejak nastavene na to... no to necham na vas, rekl sem snad vsechno, jo win je 7 HP 32bit, diky :)