How to find what depends on a specific version of a specific dependency?

Question

I'm getting this error when I run my app (not at compile time):

Could not load file or assembly 'Castle.Windsor, Version=2.1.0.0, Culture=neutral, PublicKeyToken=407dd0808d44fbdc' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

My solution has many projects, using project references where possible, but some of those projects have assembly references to external dependencies.

How can I easily find out which project is looking for this specific version of Castle.Windsor.dll? I don't have that version and am trying to use 2.5.2 (latest), so I want to find the culprit and update it to use the latest one.

Many thanks in advance.

UPDATE
I've added a sanitised Fusion log below. It appears to be telling me that Caliburn.Castle requires Castle.Windsor, Version=2.1.0.0 (which would be a mistake as I'm using 2.5), but Fusion assembly probing as actually finding Castle.Windsor, Version=2.5.1.0 instead.

Have I understood that correctly?

=== Pre-bind state information ===
LOG: User = Barney\neil
LOG: DisplayName = Castle.Windsor, Version=2.1.0.0, Culture=neutral, PublicKeyToken=407dd0808d44fbdc
 (Fully-specified)
LOG: Appbase = file:///[Debug folder of my exe]
LOG: Initial PrivatePath = NULL
LOG: Dynamic Base = NULL
LOG: Cache Base = NULL
LOG: AppName = [Filename of my exe]
Calling assembly : Caliburn.Castle, Version=1.1.0.0, Culture=neutral, PublicKeyToken=8e5891231f2ed21f.
===
LOG: This bind starts in default load context.
LOG: Using application configuration file: [Config file for my exe]
LOG: Using host configuration file: 
LOG: Using machine configuration file from C:\Windows\Microsoft.NET\Framework\v4.0.30319\config\machine.config.
LOG: Post-policy reference: Castle.Windsor, Version=2.1.0.0, Culture=neutral, PublicKeyToken=407dd0808d44fbdc
LOG: GAC Lookup was unsuccessful.
LOG: Attempting download of new URL file:///[Debug folder of my exe]/Castle.Windsor.DLL.
LOG: Assembly download was successful. Attempting setup of file: [Debug folder of my exe]\Castle.Windsor.dll
LOG: Entering run-from-source setup phase.
LOG: Assembly Name is: Castle.Windsor, Version=2.5.1.0, Culture=neutral, PublicKeyToken=407dd0808d44fbdc
WRN: Comparing the assembly name resulted in the mismatch: Minor Version
ERR: The assembly reference did not match the assembly definition found.
ERR: Failed to complete setup of assembly (hr = 0x80131040). Probing terminated.

Answer 1

You could use the Fuslogvw.exe utility which will provide you more information on the calling assembly. Scott Hansleman also blogged about it.