Some users experience the following error while installing the V2C license update file:

Error 54

In general this means that the V2C (Vendor to Customer) file has already been installed. For example when you click "Apply File" a second time this error appears the second time. In most cases there is no license problem when you see this error. You can check the license details on http://localhost:1947/_int_/features.html. This will show the license details currently installed on the key. If these details don't match what you expect or if you encounter licensing issues while running DIANA then generate a new C2V (Customer to Vendor) file and sent an email with the problem description and the new C2V file to

For more information on generating C2V files see the C2V Creation page.