That is what I thought.

Thanks Luis.

>Yes, as far as I know, you need to recompile.
>
>>I have an assembly that defines a bunch of shared subs and functions that are called by a bunch of other assemblies. If I change the signature of a sub (added an optional parameter to the end of the parameter list) in the Common assembly do I need to re-compile all assemblies that might call the Common Assembly? From the errors I generated today, that appears to be the case. Just would like to know why?
>>
>>Thanks