I am using Windows 7 x64. When starting an MVC application, I get a BadImageFormatException exception. If it runs in an application pool with 32-bit applications enabled, an exception is not thrown. Sounds like loading global.asax. I turned on the fusion logging registry setting (HKLM \ software \ Microsft \ Fusion! EnableLog). This is the log:
=== Pre-bind state information === LOG: User = NT AUTHORITY\SYSTEM LOG: Where-ref bind. Location = C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\spl.sim.mvc\5802065c\a2782d40\App_global.asax.olejmmua.dll LOG: Appbase = file:///C:/Spl/SimSvn4.5/Source/Spl.Sim.Mvc/ LOG: Initial PrivatePath = C:\Spl\SimSvn4.5\Source\Spl.Sim.Mvc\bin Calling assembly : (Unknown). === LOG: This bind starts in LoadFrom load context. WRN: Native image will not be probed in LoadFrom context. Native image will only be probed in default load context, like with Assembly.Load(). LOG: Using application configuration file: C:\Spl\SimSvn4.5\Source\Spl.Sim.Mvc\web.config LOG: Using host configuration file: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet.config LOG: Using machine configuration file from C:\Windows\Microsoft.NET\Framework64\v4.0.30319\config\machine.config. LOG: Attempting download of new URL file:///C:/Windows/Microsoft.NET/Framework64/v4.0.30319/Temporary ASP.NET Files/spl.sim.mvc/5802065c/a2782d40/App_global.asax.olejmmua.dll. ERR: Failed to complete setup of assembly (hr = 0x8007000b). Probing terminated.
Using various build configurations, this is the result:
Build x64, 32-bit application pool false: Error
Build x86, 32-bit application pool false: Error
Build AnyCPU, 32-bit application pool false: Error
X64 build, 32-bit application pool true: Error
Build x86, 32-bit application pool true: OK
Build AnyCPU, 32-bit application pool true: OK
IIS Express: OK
How to find the 32-bit DLL problem used in the 64-bit configuration?
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