首先，我之前设法让我的一个 64 位测试 Web 应用程序在这台机器上运行（回到我为这个项目设计原型的时候）。我已经在 32 位上工作了几个星期，并意识到我需要将应用程序切换到 64 位，当我这样做（在项目中将目标平台设置为 x64）并重新部署时，它停止运行。
上次我花了几天的时间才让 64 位工作，我不确定这次我错过了什么，我上次做了什么。
我在 IIS 下发布和调试。
我收到带有以下消息的 BadImageFormatException：“无法加载文件或程序集 'GEMS.Web' 或其依赖项之一。尝试加载格式不正确的程序。”
此应用程序引用 64 位和 32 位程序集。我已在 IIS 的应用程序池中将“启用 32 位应用程序”设置为 true。
我正在使用 VS.NET 2012、IIS 7.5，在 64 位 Win 7 机器上运行。
以下来自程序集负载跟踪：
Assembly manager loaded from: C:\Windows\Microsoft.NET\Framework\v4.0.30319\clr.dll
Running under executable C:\Windows\SysWOW64\inetsrv\w3wp.exe
--- A detailed error log follows.
=== Pre-bind state information ===
LOG: User = XXXXXX\xxxxxx
LOG: DisplayName = GEMS.Web
(Partial)
WRN: Partial binding information was supplied for an assembly:
WRN: Assembly Name: GEMS.Web | Domain ID: 2
WRN: A partial bind occurs when only part of the assembly display name is provided.
WRN: This might result in the binder loading an incorrect assembly.
WRN: It is recommended to provide a fully specified textual identity for the assembly,
WRN: that consists of the simple name, version, culture, and public key token.
WRN: See whitepaper http://go.microsoft.com/fwlink/?LinkId=109270 for more information and common solutions to this issue.
LOG: Appbase = file:///c:/inetpub/wwwroot/GEMS.Web/
LOG: Initial PrivatePath = c:\inetpub\wwwroot\GEMS.Web\bin
Calling assembly : (Unknown).
===
LOG: This bind starts in default load context.
LOG: Using application configuration file: c:\inetpub\wwwroot\GEMS.Web\web.config
LOG: Using host configuration file: C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet.config
LOG: Using machine configuration file from C:\Windows\Microsoft.NET\Framework\v4.0.30319\config\machine.config.
LOG: Policy not being applied to reference at this time (private, custom, partial, or location-based assembly bind).
LOG: Attempting download of new URL file:///C:/Windows/Microsoft.NET/Framework/v4.0.30319/Temporary ASP.NET Files/gems.web/eea5792e/72317e39/GEMS.Web.DLL.
LOG: Attempting download of new URL file:///C:/Windows/Microsoft.NET/Framework/v4.0.30319/Temporary ASP.NET Files/gems.web/eea5792e/72317e39/GEMS.Web/GEMS.Web.DLL.
LOG: Attempting download of new URL file:///c:/inetpub/wwwroot/GEMS.Web/bin/GEMS.Web.DLL.
ERR: Failed to complete setup of assembly (hr = 0x8007000b). Probing terminated.