Problem with utf8 and can't be installed or launched

[qqtwinsen]

i love this markdown writer very much.
but sadly encountered this error info.
when i import a chinease markdown document from typora, it appered and never gone.
I've tried reboot and reinstall, and nothing helps. T_T
I reg github specially for tell u this problem.
Please help me and your team to solve this problem.
Thanks very much~!

(Inner Exception)
(Inner Exception)
(Inner Exception)
Exception Source: mscorlib
Exception Type: System.Text.DecoderFallbackException
Exception Message: Unable to translate bytes [E9][80] at index 18 from specified code page to Unicode.
Exception Target Site: Throw

---- Stack Trace ----
System.Text.DecoderExceptionFallbackBuffer.Throw(Byte[] bytesUnknown, Int32 index)
MarkPad.exe: N 3294594
System.Text.DecoderExceptionFallbackBuffer.Fallback(Byte[] bytesUnknown, Int32 index)
MarkPad.exe: N 00008
System.Text.DecoderFallbackBuffer.InternalFallback(Byte[] bytes, Byte* pBytes, Char*& chars)
MarkPad.exe: N 00041
System.Text.UTF8Encoding.GetChars(Byte* bytes, Int32 byteCount, Char* chars, Int32 charCount, DecoderNLS baseDecoder)
MarkPad.exe: N 10706049
System.Text.UTF8Encoding.GetChars(Byte[] bytes, Int32 byteIndex, Int32 byteCount, Char[] chars, Int32 charIndex)
MarkPad.exe: N 00206
System.Xml.XmlConverter.ToChars(Byte[] buffer, Int32 offset, Int32 count, Char[] chars, Int32 charOffset)
MarkPad.exe: N 00055

(Outer Exception)
Exception Source: System.Runtime.Serialization
Exception Type: System.Xml.XmlException
Exception Message: '注册流程QUI改??md' contains invalid UTF8 bytes.
Exception Target Site: ToChars
Object reference not set to an instance of an object.

(Outer Exception)
Exception Source: System.Runtime.Serialization
Exception Type: System.Runtime.Serialization.SerializationException
Exception Message: There was an error deserializing the object of type System.Collections.Generic.List`1[[System.String, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]]. '注册流程QUI改??md' contains invalid UTF8 bytes.
Exception Target Site: ReadObjectHandleExceptions

---- Stack Trace ----
System.Runtime.Serialization.XmlObjectSerializer.ReadObjectHandleExceptions(XmlReaderDelegator reader, Boolean verifyObjectName, DataContractResolver dataContractResolver)
MarkPad.exe: N 00419
System.Runtime.Serialization.Json.DataContractJsonSerializer.ReadObject(XmlDictionaryReader reader)
MarkPad.exe: N 00061
System.Runtime.Serialization.Json.DataContractJsonSerializer.ReadObject(Stream stream)
MarkPad.exe: N 00107
MarkPad.Settings.JsonSettingsStoreBase.DeserializeList(String serializedList)
IsolatedStorageSettingsStore.cs: line 0053, col 13, IL 0031
MarkPad.Settings.SettingsProvider.ReadList(String storedValue, Type propertyType)
SettingsProvider.cs: line 0119, col 13, IL 0023
MarkPad.Settings.SettingsProvider.ConvertValue(String storedValue, Type underlyingType)
SettingsProvider.cs: line 0094, col 25, IL 0123
MarkPad.Settings.SettingsProvider.GetSettings(Boolean fresh)
SettingsProvider.cs: line 0060, col 17, IL 0153
MarkPad.Infrastructure.MarkPadAutofacModule.b__0(IActivatingEventArgs1 args) MarkPadAutofacModule.cs: line 0033, col 05, IL 0012 Autofac.Builder.<>c__DisplayClass6.<OnActivating>b__5(Object s, ActivatingEventArgs1 e)
MarkPad.exe: N 00127
Autofac.Core.Registration.ComponentRegistration.RaiseActivating(IComponentContext context, IEnumerable1 parameters, Object& instance) MarkPad.exe: N 00073 Autofac.Core.Resolving.InstanceLookup.Activate(IEnumerable1 parameters)
MarkPad.exe: N 00128
Autofac.Core.Resolving.InstanceLookup.b__0()
MarkPad.exe: N 00008
Autofac.Core.Lifetime.LifetimeScope.GetOrCreateAndShare(Guid id, Func1 creator) MarkPad.exe: N 00120 Autofac.Core.Resolving.InstanceLookup.Execute() MarkPad.exe: N 00132 Autofac.Core.Resolving.ResolveOperation.GetOrCreateInstance(ISharingLifetimeScope currentOperationScope, IComponentRegistration registration, IEnumerable1 parameters)
MarkPad.exe: N 00133
Autofac.Core.Resolving.InstanceLookup.ResolveComponent(IComponentRegistration registration, IEnumerable1 parameters) MarkPad.exe: N 00024 Autofac.Core.Activators.Reflection.<>c__DisplayClass2.<CanSupplyValue>b__0() MarkPad.exe: N 00031 Autofac.Core.Activators.Reflection.ConstructorParameterBinding.Instantiate() MarkPad.exe: N 00094 Autofac.Core.Activators.Reflection.ReflectionActivator.ActivateInstance(IComponentContext context, IEnumerable1 parameters)
MarkPad.exe: N 00174
Autofac.Core.Resolving.InstanceLookup.Activate(IEnumerable1 parameters) MarkPad.exe: N 00048 Autofac.Core.Resolving.InstanceLookup.Execute() MarkPad.exe: N 00048 Autofac.Core.Resolving.ResolveOperation.GetOrCreateInstance(ISharingLifetimeScope currentOperationScope, IComponentRegistration registration, IEnumerable1 parameters)
MarkPad.exe: N 00133
Autofac.Core.Resolving.InstanceLookup.ResolveComponent(IComponentRegistration registration, IEnumerable1 parameters) MarkPad.exe: N 00024 Autofac.Core.Activators.Reflection.<>c__DisplayClass2.<CanSupplyValue>b__0() MarkPad.exe: N 00031 Autofac.Core.Activators.Reflection.ConstructorParameterBinding.Instantiate() MarkPad.exe: N 00094 Autofac.Core.Activators.Reflection.ReflectionActivator.ActivateInstance(IComponentContext context, IEnumerable1 parameters)
MarkPad.exe: N 00174
Autofac.Core.Resolving.InstanceLookup.Activate(IEnumerable1 parameters) MarkPad.exe: N 00048 Autofac.Core.Resolving.InstanceLookup.<Execute>b__0() MarkPad.exe: N 00008 Autofac.Core.Lifetime.LifetimeScope.GetOrCreateAndShare(Guid id, Func1 creator)
MarkPad.exe: N 00120
Autofac.Core.Resolving.InstanceLookup.Execute()
MarkPad.exe: N 00132
Autofac.Core.Resolving.ResolveOperation.GetOrCreateInstance(ISharingLifetimeScope currentOperationScope, IComponentRegistration registration, IEnumerable1 parameters) MarkPad.exe: N 00133 Autofac.Core.Resolving.ResolveOperation.Execute(IComponentRegistration registration, IEnumerable1 parameters)
MarkPad.exe: N 00044

(Outer Exception)
Date and Time: 2016/11/30 11:15:33
OS Version: Microsoft Windows NT 6.1.7601 Service Pack 1

Application Domain: DefaultDomain
Assembly Codebase: file:///C:/Users/Administrator/AppData/Local/Apps/2.0/OEYBJ2T0.AOE/2MQN5Z0Y.OLG/mark...app_0000000000000000_0000.000a_4fe90f97b0816791/MarkPad.exe
Assembly Full Name: MarkPad, Version=0.10.0.12, Culture=neutral, PublicKeyToken=null
Assembly Version: 0.10.0.12
Assembly Build Date: 2016/11/28 20:48:23

Exception Source: Autofac
Exception Type: Autofac.Core.DependencyResolutionException
Exception Message: An exception was thrown while executing a resolve operation. See the InnerException for details. ---> There was an error deserializing the object of type System.Collections.Generic.List`1[[System.String, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]]. '注册流程QUI改??md' contains invalid UTF8 bytes. (See inner exception for details.)
Exception Target Site: Execute

---- Stack Trace ----
Autofac.Core.Resolving.ResolveOperation.Execute(IComponentRegistration registration, IEnumerable1 parameters) MarkPad.exe: N 00112 Autofac.Core.Lifetime.LifetimeScope.ResolveComponent(IComponentRegistration registration, IEnumerable1 parameters)
MarkPad.exe: N 00109
Autofac.Core.Container.ResolveComponent(IComponentRegistration registration, IEnumerable1 parameters) MarkPad.exe: N 00014 Autofac.ResolutionExtensions.TryResolveService(IComponentContext context, Service service, IEnumerable1 parameters, Object& instance)
MarkPad.exe: N 00074
Autofac.ResolutionExtensions.TryResolve(IComponentContext context, Type serviceType, Object& instance)
MarkPad.exe: N 00070
Caliburn.Micro.Autofac.AutofacBootstrapper`1.GetInstance(Type service, String key)
MarkPad.exe: N 00043
Caliburn.Micro.BootstrapperBase.DisplayRootViewFor(Type viewModelType)
Bootstrapper.cs: line 0246, col 13, IL 0006
MarkPad.Infrastructure.AppBootstrapper.OnStartup(Object sender, StartupEventArgs e)
AppBootstrapper.cs: line 0057, col 13, IL 0000
System.Windows.Application.OnStartup(StartupEventArgs e)
MarkPad.exe: N 00123
System.Windows.Application.<.ctor>b__1(Object unused)
MarkPad.exe: N 00043
System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
MarkPad.exe: N 00085
MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)
MarkPad.exe: N 00057