硬件＆amp;操作系统：Raspberry pi（模型B）＆amp;软浮Debian“wheezy”
好的，我做的第一件事是做'单声道完成'，安装顺利进行。我做了一些测试，效果很好。单声道版本是2.10.8.x.我在XSP（＆amp; mono-fastcgi-server4）中运行了一个简单的ASP.net（不是MVC），它也有效。然后我尝试了一个带有数据库（system.data.sqlite）的更复杂的版本，其中一个不顺利，但我想出了那个。
所以现在我尝试了一个带有sqlite +实体框架的版本，令人震惊（对我而言）它不起作用。我尝试了很多不同的东西。我无法理解。所以我开始在网上查看可能有什么问题，我意识到实体框架在最新的（BETA，3.0.1）版本中被添加到单声道。这是版本3.0.1所以我下载了这个版本并安装。它需要永远安装。
pi@raspberrypi ~ $ mono -V
Mono JIT compiler version 3.0.1 (tarball Sat Dec 1 01:10:37 AST 2012)
Copyright (C) 2002-2012 Novell, Inc, Xamarin Inc and Contributors. www.mono-project.com
TLS: __thread
SIGSEGV: normal
Notifications: epoll
Architecture: armel,vfp
Disabled: none
Misc: softdebug
LLVM: supported, not enabled.
GC: Included Boehm (with typed GC and Parallel Mark)
但它安装了。我做了一些测试（在csharp交互式编译器中），它似乎没问题。在构建/编译/安装时，我确实看到了很多警告。我不知道这是否正常。否则我会发现错误，必须立即停止。
好的，现在我的问题是： 我试图运行一个简单的网站，并在浏览器中看到：
Compilation Error
Description: Error compiling a resource required to service this request. Review your source file and modify it to fix this error.
Compiler Error Message: CS1703: An assembly with the same identity `mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' has already been imported. Consider removing one of the references
Show Detailed Compiler Output:
dmcs /target:library /lib:"/var/www/dotnet/Adwen/Bin" /debug+ /optimize- /warn:4 /out:"/tmp/root-temp-aspnet-0/624d0ef6/App_Code.1da3d18.dll" /r:"/var/www/dotnet/Adwen/Bin/myTest.dll" /r:"/var/www/dotnet/Adwen/Bin/Adwen.dll" /r:"/var/www/dotnet/Adwen/Bin/myTestModel.dll" /r:"/var/www/dotnet/Adwen/Bin/System.Data.Entity.dll" /r:"/var/www/dotnet/Adwen/Bin/System.Data.SQLite.Linq.dll" /r:"/var/www/dotnet/Adwen/Bin/System.Data.SQLite.dll" /r:"/var/www/dotnet/Adwen/Bin/System.Web.Entity.dll" /r:"/var/www/dotnet/Adwen/Bin/TechInfoSystems.Data.SQLiteProvider.dll" /r:"/usr/lib/mono/4.0/mscorlib.dll" /r:"/usr/lib/mono/gac/Microsoft.CSharp/4.0.0.0__b03f5f7f11d50a3a/Microsoft.CSharp.dll" /r:"/usr/lib/mono/gac/System/4.0.0.0__b77a5c561934e089/System.dll" /r:"/usr/lib/mono/gac/System.Configuration/4.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll" /r:"/usr/lib/mono/gac/System.Web/4.0.0.0__b03f5f7f11d50a3a/System.Web.dll" /r:"/usr/lib/mono/gac/System.Data/4.0.0.0__b77a5c561934e089/System.Data.dll" /r:"/usr/lib/mono/gac/System.Web.Services/4.0.0.0__b03f5f7f11d50a3a/System.Web.Services.dll" /r:"/usr/lib/mono/gac/System.Xml/4.0.0.0__b77a5c561934e089/System.Xml.dll" /r:"/usr/lib/mono/gac/System.Drawing/4.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll" /r:"/usr/lib/mono/gac/System.EnterpriseServices/4.0.0.0__b03f5f7f11d50a3a/System.EnterpriseServices.dll" /r:"/usr/lib/mono/gac/System.IdentityModel/4.0.0.0__b77a5c561934e089/System.IdentityModel.dll" /r:"/usr/lib/mono/gac/System.Runtime.Serialization/4.0.0.0__b77a5c561934e089/System.Runtime.Serialization.dll" /r:"/usr/lib/mono/gac/System.Xaml/4.0.0.0__b77a5c561934e089/System.Xaml.dll" /r:"/usr/lib/mono/gac/System.ServiceModel/4.0.0.0__b77a5c561934e089/System.ServiceModel.dll" /r:"/usr/lib/mono/gac/System.ServiceModel.Web/4.0.0.0__31bf3856ad364e35/System.ServiceModel.Web.dll" /r:"/usr/lib/mono/gac/System.Core/4.0.0.0__b77a5c561934e089/System.Core.dll" /r:"/usr/lib/mono/gac/System.Web.Extensions/4.0.0.0__31bf3856ad364e35/System.Web.Extensions.dll" /r:"/usr/lib/mono/gac/System.Data.DataSetExtensions/4.0.0.0__b77a5c561934e089/System.Data.DataSetExtensions.dll" /r:"/usr/lib/mono/gac/System.Xml.Linq/4.0.0.0__b77a5c561934e089/System.Xml.Linq.dll" /r:"/usr/lib/mono/gac/System.ComponentModel.DataAnnotations/4.0.0.0__31bf3856ad364e35/System.ComponentModel.DataAnnotations.dll" /r:"/usr/lib/mono/gac/System.Web.DynamicData/4.0.0.0__31bf3856ad364e35/System.Web.DynamicData.dll" /r:"/usr/lib/mono/gac/System.Data.Linq/4.0.0.0__b77a5c561934e089/System.Data.Linq.dll" /r:"/usr/lib/mono/gac/System.Web.ApplicationServices/4.0.0.0__31bf3856ad364e35/System.Web.ApplicationServices.dll" /r:"/var/www/dotnet/Adwen/bin/System.Data.SQLite.dll" /r:"/var/www/dotnet/Adwen/bin/System.Data.Entity.dll" /r:"/tmp/root-temp-aspnet-0/32404ce1/assembly/shadow/3f3d66bb/989bd275_a7a6b4ce_00000002/myTest.dll" /r:"/tmp/root-temp-aspnet-0/32404ce1/assembly/shadow/5cf434e0/fb52802e_a7a6b4ce_00000002/Adwen.dll" /r:"/tmp/root-temp-aspnet-0/32404ce1/assembly/shadow/ca2786da/6d813214_a7a6b4ce_00000002/myTestModel.dll" /r:"/tmp/root-temp-aspnet-0/32404ce1/assembly/shadow/cee499b3/69422d7d_a7a6b4ce_00000002/System.Data.SQLite.Linq.dll" /r:"/tmp/root-temp-aspnet-0/32404ce1/assembly/shadow/b7cd78f2/106bcc3c_a7a6b4ce_00000002/System.Web.Entity.dll" /r:"/tmp/root-temp-aspnet-0/32404ce1/assembly/shadow/5f634169/f8c5f5a7_a7a6b4ce_00000002/TechInfoSystems.Data.SQLiteProvider.dll" /d:DEBUG -- "/tmp/root-temp-aspnet-0/624d0ef6/App_Web_285c26e8_0.cs" "/tmp/root-temp-aspnet-0/624d0ef6/App_Web_285c26e8_1.cs" "/tmp/root-temp-aspnet-0/624d0ef6/App_Web_285c26e8_2.cs" "/tmp/root-temp-aspnet-0/624d0ef6/App_Web_285c26e8_3.cs" "/tmp/root-temp-aspnet-0/624d0ef6/App_Web_285c26e8_4.cs"
error CS1703: An assembly with the same identity `mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' has already been imported. Consider removing one of the references
mscorlib.dll (Location of the symbol related to previous error)
/usr/lib/mono/4.0/mscorlib.dll (Location of the symbol related to previous error)
error CS1703: An assembly with the same identity `System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' has already been imported. Consider removing one of the references
/usr/lib/mono/gac/System/4.0.0.0__b77a5c561934e089/System.dll (Location of the symbol related to previous error)
System.dll (Location of the symbol related to previous error)
error CS1703: An assembly with the same identity `System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' has already been imported. Consider removing one of the references
/usr/lib/mono/gac/System.Xml/4.0.0.0__b77a5c561934e089/System.Xml.dll (Location of the symbol related to previous error)
System.Xml.dll (Location of the symbol related to previous error)
error CS1703: An assembly with the same identity `System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' has already been imported. Consider removing one of the references
/usr/lib/mono/gac/System.Core/4.0.0.0__b77a5c561934e089/System.Core.dll (Location of the symbol related to previous error)
System.Core.dll (Location of the symbol related to previous error)
error CS1703: An assembly with the same identity `Microsoft.CSharp, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' has already been imported. Consider removing one of the references
/usr/lib/mono/gac/Microsoft.CSharp/4.0.0.0__b03f5f7f11d50a3a/Microsoft.CSharp.dll (Location of the symbol related to previous error)
Microsoft.CSharp.dll (Location of the symbol related to previous error)
Version information: Mono Runtime Version: 2.10.8.1 (Debian 2.10.8.1-5); ASP.NET Version: 4.0.30319.1
如果您在底部注意到错误，您可以清楚地看到'版本信息：Mono Runtime版本：2.10.8.1（Debian 2.10.8.1-5）; ASP.NET版本：4.0.30319.1'我希望看到另一个运行时版本。
那么我从哪里开始呢？这是一个错误吗？安装出错了吗？另一个xsp版本？我应该再安装一次吗？我能解决这个问题吗？在我浪费了大量的时间和精力之前，我可以提出任何问题。
答案 0 :(得分：1)
我写了这篇文章后立即发现了问题。 XSP4（或mono-fastcgi-server4）确实出了问题。我安装了单声道3.0.1，假设它会安装最新的xsp。但事实并非如此。所以我从github下载了最新版本。我的基本网站再次运作。但我的实体框架网站仍然没有工作，没有时间去工作。在我在这里报告我的发现之前，我打算这样做。
答案 1 :(得分：0)
我之前从未使用过FastCGI服务器，但几周之前我已经看到mod-mono-server4出现了同样的问题 - 但是在我报告之后很快就解决了，所以你的Mono 3.0.1应该没问题
但是，看起来FastCGI Server没有使用您编译和安装的新Mono 3.0.1，而是使用较旧的Mono 3.0.1。
您是否将新的Mono安装到主目录中的某个自定义前缀中？查看您的Web服务器配置以检查它使用的mono-fastcgi-server4，然后查看该文件 - 它应该是一些shell脚本，其中包含mono的完整路径（可能是/usr/bin/mono ）。