Hi Vadym,

Thanks for responding. I should probably clear up this thread with the
fix to the problem.

I wanted to use a separate domain [CreateDomain(...)] so that I could
load and unload assemblies (something that you can't do in the current
domain). My mistake was trying to create my dynamic assembly in a
separate domain because anything inside that domain would need to be
marshalled (by ref or val) to the current domain.

So while System.Appdomain.CreateDomain(...) will always return a
__TransparentProxy, I used the System.Appdomain.Current (property) to
return the current Appdomain that I was able to use to create my
assembly destined for disk.

Elsewhere in the code, I call CreateDomain(...) to create a the
__TransparentProxy to the domain in which I load and unload the saved
assemblies (as needed).

Rein