>The assembly is loading, not coming back null. The class itself (no classes in the assembly of any type) wont instantiate at the creatinstance line.

I guess I should have elaborated more with my answer. It looked like your CreateInstance() syntax was ok (assuming that what you are passing it valid classnames), so because that should be working ok, I thought maybe that your problem had to do with using LoadFile() instead of LoadFrom().

Assuming that you tried my LoadFrom() suggestion and it still isn't working, then their could only be two possible reasons for the CreateInstance() to not work:

1) You're not using a valid classname (it should be simply the name of the class without any namespace stuff).
2) The class itself is having problems instantiating

I doubt if it's #2, because it's happening for all of your classes.

~~Bonnie