If, when you try and load an Add-In in Outlook 2003, you get an error in the Load Behaviour section of the COM Add-Ins dialog box under Options, Other, Advanced Options that says "Not Loaded. A runtime error occurred during the loading of the COM Add-in", you can debug the exact reason.

Create a batch file that has the following lines in it:-

SET VSTO_SUPPRESSDISPLAYALERTS=0

"C:\Program Files\Microsoft Office\Office11\Outlook.exe" (or wherever Outlook is installed)

Then make sure Outlook is closed and run the batch file.

Now when you try and load the Add-In manually from Advanced Options you will get the full error message.

You can download a premade batch file from downloads if you are not happy creating a batch file.

Cheers,

Goose

For those of you who just must have a log file rather than a message there is always the other setting...

To write the errors to a log file, set the VSTO_LOGALERTS variable to 1 (one). Visual Studio Tools for Office creates the log file in the folder that contains the application manifest. The default name is <Manifestname>.manifest.log.

Cheers,

Goose