Server Error in '/' Application


Argument cannot be null. Parameter name: key

Description: HTTP 500. Error processing request.

Stack Trace:

System.ArgumentNullException: Argument cannot be null.
Parameter name: key
  at System.Collections.Generic.Dictionary`2[System.Type,Mono.Web.Util.SettingsMapping].ContainsKey (System.Type key) [0x00000] in <filename unknown>:0 
  at Mono.Web.Util.SettingsMappingManager.MapSection (System.Object input, System.Type type) [0x00000] in <filename unknown>:0 
  at Mono.Web.Util.SettingsMappingManager.MapSection (System.Object input) [0x00000] in <filename unknown>:0 
  at System.Web.Configuration.WebConfigurationManager.GetSection (System.String sectionName, System.String path, System.Web.HttpContext context) [0x00000] in <filename unknown>:0 
  at System.Web.Configuration.WebConfigurationManager.GetSection (System.String sectionName) [0x00000] in <filename unknown>:0 
  at System.Web.Security.RoleManagerModule.Init (System.Web.HttpApplication app) [0x00000] in <filename unknown>:0 
  at System.Web.Configuration.HttpModulesSection.LoadModules (System.Web.HttpApplication app) [0x00000] in <filename unknown>:0 
  at System.Web.HttpApplication.InitOnce (Boolean full_init) [0x00000] in <filename unknown>:0 

Version information: Mono Runtime Version: 2.10.8.1 (Debian 2.10.8.1-1ubuntu2.2); ASP.NET Version: 2.0.50727.1433