An error occurred while attempting to install the BizTalk application: A file load exception occurred while attempting to install the assembly into the Global Assembly Cache. This error may occur if the assembly is delay signed, or if assembly was renamed after creating/signing.
Strong name signature could not be verified. The assembly may have been tampered with, or it was delay signed but not fully signed with the correct private key. (Exception from HRESULT: 0x8013104
The Microsoft BizTalk ESB Toolkit .msi does not register the itinerary designer by default. Post installation, the user needs to select Install itinerary designer extensions under Start> All Programs> Microsoft BizTalk Server 2010 ESB toolkit.