fuslogvw.exe

Also known as the Fusion Log or Assembly Binding Log Viewer.
This tool is installed as part of Visual Studio and is not available otherwise.
This displays details for failed assemby binds or missing dependencies.
There is a small performance hit when this is switched on.
There are two ways to enable the log.
Either from the command line or using the user interface
SS
msdn.microsoft.com/en-us/library/e74al8c4(v=vs.110).aspx

Location

Windows 7 - C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\Bin\FUSLOGVW.exe
Windows XP - C:\Program Files\Microsoft SDKs\Windows\v6.0A\Bin\FUSLOGVW.exe

Registry Entries

HK Local Machine\ Software\Microsoft\Fusion\
Create the following values in the Fusion folder:
EnableLog (DWORD) = 1
ForceLog (DWORD) = 1
LogFailures (DWORD) = 1
LogResourceBinds (DWORD) = 1
LogPath (String) = C:\Temp\FusionLog
This folder path must exist already

How to Use

Add the above registry entries
Close and reopen Excel
Launch the Fuslogvw.exe to see the log entries.