So i am using this 3rd party API in one of my applications. Both the
DLL for the API and my executable sit on a network drive for everyone
to access. Therefore all of the machines in my company have code
groups set up to allow the application to run.

For a large majority of the 80 or so machines, this works beautifully.
I've identified 4 machines that give this error:

"Exception Occured. Request for the permission of type
System.Security.Permissions.SecurityPermission, mscorlib,
Version=1.0.5000.0, Culture=nuetral, PublicKeyToken=b77wrfewreq34rfq
failed."

When comparing the code groups on the different machines, I see that
they are all the same. On the machines the application works, it works
100% of the time. On the machines it does not work, it fails 100% of
the time, aside from one case. When the .Net Configuration 1.1 Tool in
"Administrative Tools" is open, you do not get the error message. It's
as if having the tool open puts the machine into some other state and
allows my app to run properly. Then when I close the tool, i go back
to getting the error message.

Can anyone make any sense out of this and possibly suggest a solution?

Thanks,
Mike