Hey VDC,
I think that perhaps
this thread will provide you with some more insight into what I think is going on here.
Based upon the dialog in the above thread, it sounds to me like perhaps
your Edit module contains references to an object that isn't actually
in existence yet - I would recommend investigating this first.
That being said, if you can't figure out what's wrong, I'm happy to continue to try to help.
Unfortunately without a
small example of the assembly and a demonstration sequence file, I won't be able to do much with the Types Palette - though it does look like you've situated the Edit step appropriately.
Would you be willing to post a small example Assembly that demonstrates this and an example sequence file that demonstrates 1) the error you're getting when using the custom step in your sequence and 2) the fact that this works when using .NET Action steps to call all of the pre-step and edit-steps?
Derrick S.
Product Manager
NI DIAdemNational Instruments