In my Excel aplication I should use external assembly, which contains some shared members. I compiled this external assembly with AllowPartiallyTrustedCallersAttribute, but still Excel fails on calling the constructor with security exception "That assembly does not allow partially trusted callers".
Maybe somebody has an idea which side I should look for According to all docs it should work, but it fails...

Partial trusted call from Excel application to shared memberes of referenced assembly
Stuart_D
Thanks!
Mike Hernandez
Community Program Manager
VSTO Team