C# 初始化任务时出错：未注册任务

我正试图在我的mac上构建一个原始的Windows/VisualStudio C#项目。具体来说，我正在尝试转换为dll，以便在我自己的C#文件中使用它

但我得到了所有这些错误：

XBuild Engine Version 14.0
Mono, Version 4.4.2.0
Copyright (C) 2005-2013 Various Mono authors

Build started 20/12/2016 14:00:55.
__________________________________________________
:  warning : Default tasks file /Library/Frameworks/Mono.framework/Versions/4.4.2/lib/mono/3.5/Microsoft.Common.tasks not found, ignoring.
Project "/Users/theonlygusti/Documents/Programming/chatter-bot-api/dotnet/ChatterBotAPI/ChatterBotAPI.csproj" (default target(s)):
    Target PrepareForBuild:
: error : Error initializing task Message: Not registered task Message.
            Target _RecordCleanFile:
: error : Error initializing task ReadLinesFromFile: Not registered task ReadLinesFromFile.
                Build FAILED.
                Warnings:
                :  warning : Default tasks file /Library/Frameworks/Mono.framework/Versions/4.4.2/lib/mono/3.5/Microsoft.Common.tasks not found, ignoring.
                Errors:
                /Users/theonlygusti/Documents/Programming/chatter-bot-api/dotnet/ChatterBotAPI/ChatterBotAPI.csproj (default targets) ->
                /Library/Frameworks/Mono.framework/Versions/4.4.2/lib/mono/xbuild/14.0/bin/Microsoft.Common.targets (PrepareForBuild target) ->
                    : error : Error initializing task Message: Not registered task Message.
                /Users/theonlygusti/Documents/Programming/chatter-bot-api/dotnet/ChatterBotAPI/ChatterBotAPI.csproj (default targets) ->
                /Library/Frameworks/Mono.framework/Versions/4.4.2/lib/mono/xbuild/14.0/bin/Microsoft.Common.targets (PrepareForBuild target) ->
                (_RecordCleanFile target) ->
                    : error : Error initializing task ReadLinesFromFile: Not registered task ReadLinesFromFile.
                     1 Warning(s)
                     2 Error(s)
                Time Elapsed 00:00:00.1460680

我如何进入某种可以在其他程序中使用的库

XBuild Engine Version 14.0
Mono, Version 4.4.2.0
Copyright (C) 2005-2013 Various Mono authors

Build started 20/12/2016 14:00:55.
__________________________________________________
:  warning : Default tasks file /Library/Frameworks/Mono.framework/Versions/4.4.2/lib/mono/3.5/Microsoft.Common.tasks not found, ignoring.
Project "/Users/theonlygusti/Documents/Programming/chatter-bot-api/dotnet/ChatterBotAPI/ChatterBotAPI.csproj" (default target(s)):
    Target PrepareForBuild:
: error : Error initializing task Message: Not registered task Message.
            Target _RecordCleanFile:
: error : Error initializing task ReadLinesFromFile: Not registered task ReadLinesFromFile.
                Build FAILED.
                Warnings:
                :  warning : Default tasks file /Library/Frameworks/Mono.framework/Versions/4.4.2/lib/mono/3.5/Microsoft.Common.tasks not found, ignoring.
                Errors:
                /Users/theonlygusti/Documents/Programming/chatter-bot-api/dotnet/ChatterBotAPI/ChatterBotAPI.csproj (default targets) ->
                /Library/Frameworks/Mono.framework/Versions/4.4.2/lib/mono/xbuild/14.0/bin/Microsoft.Common.targets (PrepareForBuild target) ->
                    : error : Error initializing task Message: Not registered task Message.
                /Users/theonlygusti/Documents/Programming/chatter-bot-api/dotnet/ChatterBotAPI/ChatterBotAPI.csproj (default targets) ->
                /Library/Frameworks/Mono.framework/Versions/4.4.2/lib/mono/xbuild/14.0/bin/Microsoft.Common.targets (PrepareForBuild target) ->
                (_RecordCleanFile target) ->
                    : error : Error initializing task ReadLinesFromFile: Not registered task ReadLinesFromFile.
                     1 Warning(s)
                     2 Error(s)
                Time Elapsed 00:00:00.1460680