Error when trying to create a instance of a class on the network

[TheVillageCodingIdiot]

Short story is this. I have a class that sits on a network share, and
a local windows form that references the class on the network. Both
the form and class are signed with the same SKN. I have added the SKN
to the .net framework and giving it full trust permissions. But when I
try to create a instance of the class, I get a error "Exception has
been thrown by the target of an invocation" with a inner exception of
"That assembly does not allow partially trusted callers." I even get
this error when running in debug. I just got a new PC that is windows
7 64bit, my previous machine was a windows XP 32bit and had no issues.
I have tried cleaning the solution, recompiling both the form and
class. Running VS as admin and nothing seems to work. Anyone have any
ideas?

Regards

[TheVillageCodingIdiot]

More info. The application seems to work if I use the OneClick
manafest and install it on my pc and say its a full trust.

[TheVillageCodingIdiot]

Even more info: The application also works if I copy the exe out to
the same network directory as the referenced dll. So it looks like the
local exe isnt getting full trust even though its on the local
machine.