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I noticed a lot of ArgumentExceptions in the log files which seem to have to impact though. I am using a German system. (VS2015, current version of JustCode)
SILENT 2016-10-27 19:26:26.144 : Couldn't read correctly the following keybinding 'Text Editor::Strg+Umschalt+Alt+C' from VS command: JustCode.JustCode_CleanCodeSILENT 2016-10-27 19:26:26.144 : System.ArgumentException: Keybinding string: Text Editor::Strg+Umschalt+Alt+CParametername: keyBindingString ---> System.ArgumentException: Der angeforderte Wert "Strg,Umschalt,Alt" konnte nicht gefunden werden. bei System.Enum.EnumResult.SetFailure(ParseFailureKind failure, String failureMessageID, Object failureMessageFormatArgument) bei System.Enum.TryParseEnum(Type enumType, String value, Boolean ignoreCase, EnumResult& parseResult) bei System.Enum.Parse(Type enumType, String value, Boolean ignoreCase) bei Telerik.JustCode.CommonLanguageModel.KeyBindings.KeyboardModifierKeysExtensions.ParseModifierKeys(String keys) in C:\_J\workspace\JustCode_Roslyn_Installer\RoslynTemp\_CodeAnalysis\src\CommonLanguageModel.Data\KeyBindings\KeyboardModifierKeysExtensions.cs:Zeile 31. bei Telerik.JustCode.CommonLanguageModel.KeyBindings.KeyCombination.CreateFromString(String keyCombination, Func`2 parseKey) in C:\_J\workspace\JustCode_Roslyn_Installer\RoslynTemp\_CodeAnalysis\src\CommonLanguageModel.Data\KeyBindings\KeyCombination.cs:Zeile 42. bei Telerik.JustCode.CommonLanguageModel.KeyBindings.KeyBinding.CreateFromString(String keyBindingString, Func`2 parseKey) in C:\_J\workspace\JustCode_Roslyn_Installer\RoslynTemp\_CodeAnalysis\src\CommonLanguageModel.Data\KeyBindings\KeyBinding.cs:Zeile 55. --- Ende der internen Ausnahmestapelüberwachung --- bei Telerik.JustCode.CommonLanguageModel.KeyBindings.KeyBinding.CreateFromString(String keyBindingString, Func`2 parseKey) in C:\_J\workspace\JustCode_Roslyn_Installer\RoslynTemp\_CodeAnalysis\src\CommonLanguageModel.Data\KeyBindings\KeyBinding.cs:Zeile 87. bei Telerik.JustCode.Services.CommandWrapper.#3sv.#Uu() in C:\_J\workspace\JustCode_Roslyn_Installer\RoslynTemp\src\JustCode.Application\Services\Commands\CommandWrapper.cs:Zeile 57.