Stephen,

>Could not load type OakLeaf.MM.Main.Business.mmAbstractBusinessObject from assembly Mere Mortals Framework, Version=1.1.1119.20257, Culture=neutral, PublicKeyToken=511bd18e16c7f771.
>Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Two things to check:

1. Make sure you have the following assembly references in your web.config file:

<compilation defaultLanguage="c#" debug="true" >
	<assemblies>
		<add assembly="Mere Mortals Framework Interfaces, Version=1.1.1118.20862, Culture=neutral, PublicKeyToken=2312fefb461dbb0e" />
		<add assembly="Mere Mortals Framework Web Forms, Version=1.1.1158.18447, Culture=neutral, PublicKeyToken=a16649d902b008d4" />
	</assemblies>
</compilation>

2. You may have old MM .NET assemblies on this machine. ASP.NET tends to cache assemblies and it may be trying to load an old assembly that doesn't include this class.

Regards,